On December 10th 1969, somebody mailed the Day-by-day forecast for Cancer horoscope page to the Sacramento Bee newspaper, lollowed by the Day-by-day forecast for Leo horoscope page to the San Francisco Newspaper Printing Company on December 11th 1969. The mailing date of the Forecast for Cancer page on December 10th coincided with the abduction date of Leona Roberts from 749 Tormey Avenue, Rodeo. The pasted phrase "Birds Fly South" seemed relevant to Bolinas Lagoon, Marin County where her body was ultimately found on December 28th 1969. And it must also be noted that a novel by Stanton Arthur Coblentz called "When the Birds Fly South" (1945) was published in Marin County. The Cancer page also contained the pasted text "Zodiac".

The Forecast for Leo(na) page mailed the following day was considered a play on the name and fate of "Leona", who wasn't murdered for at least a week after her abduction. At the end of December, the newspapers told of the discovery of her body at Bolinas Lagoon and refreshed the memories of the readers by reporting on the day of her abduction from the 749 Tormey Avenue apartment. Alongside the story of Leona Roberts in the Solano-Napa News Chronicle on December 29th 1969 was the headline "Zodiac Security Tightened", warning that the Bay Area murderer might strike again soon.  

So it's probably unsurprising that this newspaper coverage was shortly followed by another "Zodiac" phone call on January 4th 1971 to Peggy Trainer, threatening her murder. Peggy Trainer lived at the same 749 Tormey Avenue address from where Leona Roberts was abducted from. The Zodiac Killer could easily have read the newspaper coverage and phoned a death threat to Peggy Trainer to attach himself to that address and the murder of Leona Roberts, but if this phone call was all he did, then how lucky was he that his pseudonym "Zodiac" was mailed by somebody else on December 10th 1969 (the day of her abduction), who pasted "Birds Fly South" which appeared to coincide with the north-south Pacific flyway of Bolinas Lagoon where her body was found, and who mailed a "Forecast for Leo" page that coincided with her name and not immediate death. 

However, there is a major problem with the timeline presented above. One of the neighbors reported hearing screams from the ground floor apartment at approximately 6:15pm on December 10th 1969, with police arriving shortly thereafter. This, as yet undetermined "disturbance", was obviously not reported to the public on the 10th, so any communication mailed with a PM postmark on the same day by somebody pasting "Zodiac" onto a horoscope page, could not have been a response to the abduction, whether Zodiac or not. The Cancer horoscope page, with pasted newspaper cuttings on its face, was mailed in Sacramento, a 60 minute journey from the 749 Tormey Avenue address.

The notion of an abductor, forcibly removing a 16-year-old girl from a residence and securing her at an undetermined location, manufacturing an immediate multi-pasted communication, and then driving 58 miles to Sacramento to mail the letter, for it to somehow receive a December 10th postmark, is totally unrealistic. The fact that the designer of the two December communications chose horoscope pages from November rather than December - which would have been more relevant to the crime - could suggest that these two letters were prepared in advance of Leona Roberts abduction and the generic Cancer page mailed prior to 6:15pm on December 10th 1969.

​After the successful abduction had been achieved, the more specific "Forecast for Leo" page could then have been dispatched. The other alternative, is that neither communication had anything to do with the abduction of Leona Roberts, and the phone call on January 4th 1971 was unrelated, but for the pseudonym "Zodiac" that was relevant to both. It has yet to be definitively established whether any connection exists between the abduction of Leona Roberts and the December 10th/11th letters, or any Zodiac involvement whatsoever. The communications and phone call on January 4th 1969 could have been somebody attempting to misdirect law enforcement away from a killer known to Leona Roberts, who had personal reasons to end her life. Implicating the Zodiac Killer for a murder (especially by phone) was an easy option through 1969 and beyond. I think it much more likely that the murderer of Leona Roberts was a mentally inadequate individual with an unhealthy fantasy he failed to control. Sounds just like Zodiac doesn't it.

The consensus opinion on the decoded 408 cryptogram message is that the killer took inspiration from "The Most Dangerouse Game" short story, authored by Richard Connell in 1924, or the 1932 adapted movie version starring Joel McCrea and Leslie Banks. Subsequent Zodiac communications have led people to believe that the Bay Area murderer may have had a fascination for the theater, movies, books and comics, such as the 1952 Tim Holt comic publication, likely used in the design of the Halloween card and "The Mikado" by Gilbert & Sullivan, which premiered in 1885 and was plagiarized in the Little List and Exorcist letters. These two examples, along with the suggested links to Charlie Chan and Alfred Hitchcock, appear to suggest the Zodiac Killer wasn't averse to drawing inspiration from yesteryear.

​Recently Jarett Kobek, in his book "How to Find Zodiac", has looked into the fanzine culture, in which enthusiasts of a particular cultural phenomenon (such as the literary or musical genre) share their passions through a shared interest magazine. Hence the suggestion of the Zodiac Killer's ability to source the limited 1952 Tim Holt comic book to reproduce in his October 27th 1970 communication. The term was coined in a 1940 science fiction fanzine by Russ Chauvenet and first popularized within science fiction fandom, before being adopted by other communities. 

Stanton Arthur Coblentz, born in San Francisco, was a science fiction author and poet, whose first published books began with "The Sunken World" in 1928 and continued into the 1970s, that included "When the Birds Fly South" (1945) and "Hidden World" (1955). When the Birds Fly South is a fantasy novel, first published by "The Wings Press" in Mill Valley, Marin County in 1945 (later reprinted in 1951). The story features Dan Prescott, an American adventurer, who discovers the hidden valley of Sobul in a mountainous region of Afghanistan, inhabited by a strange race of winged people known as the "Ibandru". He falls in love with one of them, Yasma, and they marry in a scene of general celebration. When fall comes, however, the Ibandru abandon their valley to fly south with the birds for the winter. Stanton Coblentz also authored and released the book "Mountain of the Sleeping Maiden & Other Poems" on January 1st 1946 - a reference to Mount Tamalpais, which overlooks Bolinas Lagoon in Marin County.

Was there a possibility that the Zodiac Killer knew about the works of Stanton Coblentz and where he lived, using the cryptic pasted text of "Birds Fly South" and "Hidden", next to each other in the communication, when he mailed a horoscope page to the Sacramento Bee newspaper on December 10th 1969, entitled "Day-By-Day Forecast for Cancer"? This was the date Leona Roberts was abducted from the 749 Tormey Avenue residence in Rodeo, California. Her body was discovered eighteen days later on December 28th 1969 at Bolinas Lagoon in Marin County, a north-south Pacific flyway for birds migrating south for the winter. On December 11th 1969, another possible Zodiac letter arrived in San Francisco with the title "Day-By-Day Forecast for Leo", leading one to conclude it may have been a play on words, insinuating that it was a "Forecast for Leona Roberts", who wasn't killed for at least a week after her abduction. 

Both "The Wings Press" and Stanton Coblentz's residence were located in Marin County, where Leona Roberts body would ultimately be found, During the early Zodiac Killer years, Stanton Coblentz lived at 37 Throckmorton Avenue in Mill Valley, just 600 feet from the Throckmorton Theater at 142 Throckmorton Avenue (originally called The Hub Theater when it opened in 1912), and only 5.8 miles from Bolinas Lagoon. Not too far from his residence was the Port Theater (forever connected to The Red Phantom & El Espectro Rojo), once operated by Zodiac suspect Richard Marshall, circa 1974 and beyond.

It seems rather uncanny that Leona Roberts was abducted on the same day the "Forecast for Cancer" horoscope letter arived on December 10th 1969 with the pasted text of "Zodiac" and "Birds Fly South", to be then followed by the "Forecast for Leo" horoscope page, with her body being found eighteen days later at Bolinas Lagoon in Marin County where "Birds Fly South", which was prominent in the book title of a science fiction author, whose home and the publishing house for this book, was located in Marin County. If that wasn't enough, somebody calling themself "Zodiac" made a phone call to Peggy Trainer and threatened her life on January 4th 1970. She lived at 749 Tormey Avenue in Rodeo, where Leona Roberts was abducted from on December 10th 1969. The two horoscope letters had not been published in the newspapers by January 4th 1970, meaning the phone caller was not mimicking the author of the letters in December. This phone call arrived just seven days after Leona Roberts' body was found at Bolinas Lagoon..

Was the Zodiac Killer laying down cryptic clues in the two horoscope letters, partly using the works of a book author, with the intention of pointing us towards the abduction and murder of Leona Roberts? The pseudonym of "Zodiac" being present in a communication the day of Leona Roberts abduction, and spoken in a phone call on January 4th 1970 to the address she was abducted from. If these were different individuals, then that is a coincidence worthy of science fiction and the writings of Stanton Arthur Coblentz.

​Steph 54: On 28 December 1969, a man searching for driftwood on the beach at Bolinas Lagoon in Marin County found the nude body of Leona Roberts. It was later determined that a unique wristwatch was missing from the girl's wrist, but a Napa High School class ring given to her by a neighbor still remained on her finger. The tan dress she wore when last seen, along with two pairs of bell-bottomed pants, a blouse, a black purse and wallet, a key chain with car and house keys were also reported missing. There were marks on the wrists and ankles indicative of binding, but the coroner was unsure whether they occurred before or after death. The cause of death was reported as "due to viral infection of an unidentified species." It was also reported that there was "evidence of choking which could probably be linked to the virus." The coroner estimated that she had been dead 4-7 days (December 21-24) prior to recovery, and he theorized that she had been alive 10-14 days after her abduction. Articles reported the coroner's theory that Leona had been kept bound for a period of time, died as a result of the viral infection, and was disposed of by her abductor(s). Pathological and toxicological tests did not find any drugs or alcohol in her system.

Leona Roberts was abducted from her boyfriend's apartment at 749 Tormey Avenue in Rodeo at approximately 6:00pm on December 10th 1969, and her naked body was found on December 28th 1969 by an elderly man collecting driftwood near Bolinas Lagoon. The coroner estimated she had been alive 10 to 14 days after her abduction, with the sheriff's office stating she had been dead about 10 days. This suggests she was murdered (or had died in captivity) sometime between December 18th and December 24th 1969.​

Two of the least understood communications possibly mailed by the Zodiac Killer were the Day-by-day forecast for Cancer and Day-by-day forecast for Leo horoscopes, with the first mailed from Sacramento to the Sacramento Bee newspaper on December 10th 1969 and the second from San Francisco to the San Francisco Newspaper Printing Company, P.O. Box 3100, Rincon Annex, San Francisco on December 11th 1969. The Day-by-day forecast for Cancer pasted horoscope page contained the prominent words Want, Zodiac and Watch, and the phrase "Birds Fly South". One notable feature on the horoscope page was the word "Cancer", which had been ringed in the page title.

​The following day, on December 11th 1969, the Day-by-day forecast for Leo horoscope page was mailed, but the word Leo had not been ringed in the page title. However, this communication arrived one day after the abduction and eventual murder of Leona Roberts, whose body was ultimately discovered alongside Bolinas Lagoon in Marin County on December 28th 1969. The coroner concluded she had been kept alive for a duration of 10 to 14 days after her abduction, with the sheriff's office stating she had been dead about 10 days. This makes the Day-by-day Forecast for Leo(na Roberts) horoscope page very interesting indeed, because it may imply a forecast for Leona Roberts rather than an immediate murder. Additionally, neither of these two communications (with one containing the word Zodiac) were public knowledge on January 4th 1970, when somebody telephoned Peggy Trainer, identified himself as the Zodiac Killer, and stated she would be his next victim. Peggy Trainer lived in the same building at 749 Tormey Avenue, Rodeo, where Leona Roberts was abducted from. This links both the phone call and December 10th 1969 communication to the pseudonym "Zodiac", and to the day of her abduction. 

The Day-by-day forecast for Cancer horoscope page was mailed on the same day as Leona Roberts abduction, containing the phrase "Birds Fly South". It has been difficult to find the meaning behind the author's choice of pasted words, but one thing we know about the Zodiac Killer is his inspiration was often sourced from literature and film, such as the short story The Most Dangerous Game by Richard Connell, first published on January 19th 1924 (or the resulting 1932 film version), the Gilbert & Sullivan comic opera, The Mikado, and The Exorcist film (1973), inspired by William Peter Blatty's 1971 book, to name just a few.

When the Birds Fly South is a fantasy novel by Stanton A. Coblentz, first published by The Wings Press, Mill Valley in Marin County in 1945, and reprinted in 1951. The story features Dan Prescott, an American adventurer, who discovers the hidden valley of Sobul in a mountainous region of Afghanistan, inhabited by a strange race of winged people known as the "Ibandru". He falls in love with one of them, Yasma, and they marry in a scene of general celebration. When fall comes, however, the Ibandru abandon their valley to fly south with the birds for the winter.

Bearing in mind this novel was first published in Marin County and has Birds Fly South in the title, it seems extremely coincidental that the body of Leona Roberts would be found alongside Bolinas Lagoon in Marin County, which is a major north-south Pacific Flyway for migratory birds in America, extending from Alaska to Patagonia. Every year, migratory birds travel some or all of this distance both in spring and in fall, following food sources, heading to breeding grounds, or travelling to overwintering sites.

​The Day-by-day forecast for Cancer communication was not only mailed on the day of Leona Roberts' abduction, containing the pasted word "Zodiac", but contained the phrase "Birds Fly South", present in the title of a book first published in Marin County, where the body of Leona Roberts was ultimately found alongside the north-south Pacific Flyway of migratory birds at Bolinas Lagoon. The astrological sign of Cancer (circled in the forecast below) is the cardinal sign of the Water trigon. When we factor in the Day-by-day Forecast for Leo(na Roberts) horoscope page and the telephone call on January 4th 1970 in absence of either of these communications being made public, can we really lay all this at the door of coincidence?  

All of the Zodiac letters were hand printed up to December 10th 1969, when the Day-By-Day Forecast for Cancer pasted horoscope was mailed to the Sacramento Bee newspaper. This horoscope page contained more information than visible in the versions shown on the internet. The FBI files state The handwritten notations on Q40 in the wording "...Flight 555 SF. 700 P.M. P.M." could not be associated with any of the other questioned material in this case (because it was cursive handwriting and not non-cursive/hand printed). It is noted in this regard that the writing on the other specimens in this matter is hand printed and that the notations on Q40 are very limited.  

​This means that the limited handwriting contained within the message "...Flight 555 SF. 700 P.M. P.M." was redacted from the image we are accustomed to. It appears that the pasted FLT 555 was referring to "Flight 555" after all. Very likely from San Francisco at 7:00PM, according to the sender. Howard Davis of the Zodiac/Manson website, reported that Drew Peterson relayed information about a reporter who found a United Flight 555 that flew from San Francisco to San Diego every Wednesday at 7:30pm, tying in with the "Birds Fly South" pasted text on the Day-By-Day Forecast for Cancer communication. This almost lines up with the notation of  Flight 555 SF. 700 PM (using a viniculum under 00), which was written on the horoscope page (Q40). The mailing date of the Day-By-Day Forecast for Cancer communication and the abduction of Leona Roberts were both on a Wednesday. Howard Davis has toyed with the idea that the Zodiac Killer was giving hints he was more than capable of traveling to San Diego, where on February 4th 1964 at Ocean Beach, Johnny & Joyce Swindle were murdered by a sniper alongside the seafront. Bolinas Lagoon (where Leona Roberts body was found) and San Diego Bay are also both key sites in the Pacific Flyway for migratory birds.

Steph 54: On 28 December 1969, a man searching for driftwood on the beach at Bolinas Lagoon in Marin County found the nude body of Leona Roberts. It was later determined that a unique wristwatch was missing from the girl's wrist, but a Napa High School class ring given to her by a neighbor still remained on her finger. The tan dress she wore when last seen, along with two pairs of bell-bottomed pants, a blouse, a black purse and wallet, a key chain with car and house keys were also reported missing. There were marks on the wrists and ankles indicative of binding, but the coroner was unsure whether they occurred before or after death. The cause of death was reported as "due to viral infection of an unidentified species." It was also reported that there was "evidence of choking which could probably be linked to the virus." The coroner estimated that she had been dead 4-7 days (December 21-24) prior to recovery, and he theorized that she had been alive 10-14 days after her abduction. Articles reported the coroner's theory that Leona had been kept bound for a period of time, died as a result of the viral infection, and was disposed of by her abductor(s). Pathological and toxicological tests did not find any drugs or alcohol in her system.

Leona Roberts was abducted on December 10th 1969, in tandem with a communication of pasted words that contained "Zodiac", "Watch" and "Birds Fly South". This communication, eighteen days in advance of her body being discovered, highlighted the word "Watch" in the largest letters, and significant bearing in mind a unique wristwatch was reported missing from the girl's wrist on December 28th 1969. She was also found at Bolinas Lagoon, so the "Birds Fly South" phrase may have some meaning when we consider that Bolinas Lagoon is a major north-south Pacific flyway for migratory birds in America, extending from Alaska to Patagonia. 

​The coroner also noted marks on her wrists and ankles, suggestive of somebody being bound. The two sinister communications on December 10th and 11th - obviously mailed by the same author - were horoscope forecasts, with the second communication possibly a play on words using the name of Leona Roberts. It was entitled  Day-By-Day Forecast For Leo. The fact that this author facilitated the use of forecasts in accompaniment to the word "Leo", when her body took eighteen days to surface, with the coroner estimating her death 10 to 14 days after her abduction, is some forecast. ​

The Zodiac Killer had claimed seven victims on November 9th 1969, but he didn't (assuming it was Zodiac) raise this victim count in the two forecast letters on December 10/11. He also made no change to his victim count in the two Fairfield letters mailed on December 7th and 16th. Yet he did raise his victim count to 8 on December 20th 1969, when he stated "I am afraid I will loose control again and take my nineth & possibly tenth victom". This could imply the Zodiac Killer claimed his eighth victim between December 16th and December 20th 1969 - very close to the estimated time of death of Leona Roberts. The estimation of death with increased time is obviously more difficult to pinpoint, so it's perfectly feasible an error of just one or two days, places her time of death between the period Zodiac's victim count increased to eight. The two forecast letters were never publicly released at the time, making the threatening "Zodiac" phone call to Peggy Trainer (18) on January 4th 1970, who lived in the same building from where Leona Roberts was abducted, a further uncanny coincidence.   

The Zodiac Killer claimed the Snoozy & Furlong murders in his Dripping Pen card on November 8th 1969, before going on to write a letter to the San Jose Police Department on November 21st 1969, and making a phone call to the San Jose Highway Patrol on December 19th 1969. This was likely done to cement the notion in investigators minds of his involvement in the Snoozy & Furlong murders in San Jose, despite the fact he had no hand in their demise. 

Leona Roberts (16) disappeared from her boyfriend's apartment at 749 Tormey Avenue in Rodeo at around 6:00pm on December 10th 1969. Her disappearance coincided with a pasted communication on the same date from Sacramento, dubbed the Day-By-Day Forecast for Cancer, which contained the pasted word "Zodiac". The following day, on December 11th 1969, a second pasted communication postmarked San Francisco and dubbed the Day-By-Day Forecast for Leo, could have been a play on "Leona" Roberts name and fate, bearing in mind she wasn't murdered for at least a week after her abduction. Her body was found at Bolinas Lagoon on December 28th 1969.

These two pasted horoscope communications were not publicly released, yet somebody claiming to be the Zodiac Killer just happened to phone Peggy Trainer (18) and claim she would be his next victim. Peggy Trainer lived directly behind the apartment where Leona Roberts disappeared from, in the same multi-dwelling residence at 749 Tormey Avenue.

Therefore, we have two sinister horoscope communications on December 10th and 11th containing the pseudonym "Zodiac" and the "Forecast for Leo", along with a potential "Zodiac" phone call to Peggy Trainer on January 4th 1970, who was a neighbor to the apartment where Leona Roberts was last seen alive. Did the person who rang Peggy Trainer claiming to be Zodiac, if different from the author of the December 10/11 communications, just get lucky attaching the pseudonym "Zodiac" close to an abduction site, that coincided with a "Zodiac" communication mailed on Leona Roberts abduction date? Or were the communications and caller the same person, separated by 24 days? 

Thank you to Gavin Fish from True Crime on Youtube for supplying me with this newspaper article from the Contra Costa Times, dated January 7th 1970. 

One would presume the only person who knew that Leona Roberts wasn't going to be killed immediately after being abducted was the killer, which is why the two "forecast" letters on December 10th 1969 and December 11th 1969 are extremely interesting. The two pasted horoscope communications entitled Day-By-Day Forecast For Cancer and Day-By-Day Forecast For Leo, bearing in mind the latter could easily be interpreted as Day-By-Day Forecast For Leona Roberts, is extremely perintinent when we consider the timing of the communications and her abduction. The December 10th communication also came with the pasted pseudonym of "ZODIAC" emblazoned across its face. The fact that these communications were a forecast (a prediction of what will happen), coupled with a Zodiac horoscope and the distinct possibility that "Leo" was chosen for purpose, then the discovery of her body eighteen days later at Bolinas Lagoon in Marin County, is rather curious.

The coroner concluded that she had likely been dead "4 to 7 days prior to recovery, and he theorized that she had been alive 10-14 days after her abduction". She was abducted on Wednesday December 10th 1969 and found at Bolinas Lagoon on December 28th 1969, so that places her murder between December 20th 1969 and December 24th 1969, allowing for a small margin of error. The longer between death and discovery, the more difficult it is to make an accurate determination. 

The Zodiac Killer mailed the Fairfield letter on December 16th 1969, but he made no update to his running total of seven victims. In this communication he added a supplemental drawing of a "Bleeding Knife" with seven drops of blood, possibly fashioned to incorporate the two extra victims he was claiming, that of Kathie Snoozy and Debra Furlong murdered in San Jose on August 3rd 1969, by knife. Just four days later, the Melvin Belli letter arrived at the San Francisco Chronicle stating the Zodiac Killer was resisting the temptation to murder his ninth and tenth victim. This appears to indicate that victim number eight was secured between December 16th 1969 and December 20th 1969, which falls around the approximate time the coroner determined that Leona Roberts was murdered. If the above interpretation is correct, we would have three Zodiac communications on December 11th 1969, December 16th 1969 and December 20th 1969, giving us a "forecast for Leo", a failure to update the running victim total five days later, followed by an update to eight victims just four days later, around the time Leona Roberts was killed.         

The phrases on the Cancer and Leo communications are difficult to interpret, but when we consider the random phrase of "BIRDS FLY SOUTH" (pasted between the 18th and 24th) and the location where her body was discovered, on a north to south Pacific Flyway for migratory birds, one can't help thinking that the pasted clues were cryptic in nature. Irrespective of their correct meanings or otherwise, the "forecast" letters and the timing of Leona Roberts abduction should not be overlooked. It is likely only one person knew the day-by-day forecast for Leona Roberts, and his identity remains a mystery to this day. 

​READ THE LATEST DEVELOPMENTS ON LEONA ROBERTS 

A man was seen running into Julius Khan playground shortly after the murder of Paul Stine on October 11th 1969, detailed by author Robert Graysmith, who stated "The detectives heard from neighbors that a stocky figure was seen dashing across Julius Khan playground and into the dense undergrowth of the Presidio. The dog patrol units, seven of the best search dogs in the country, gathered at the front entrance of the Presidio and were deployed one at a time in various directions. Armstrong and Toschi considered the possibilities. Had the killer gone quickly through the dark woods and emerged from the Presidio at Richardson Avenue, and taken Highway 101 past Fort Point onto the Golden Gate Bridge and vanished into Marin County".

It was speculated whether the Zodiac Killer had exited the Presidio Park on its eastern edge to a waiting vehicle, with his escape via the Golden Gate Bridge into Marin County a matter of minutes away, providing separation from the San Francisco area. If the Zodiac Killer worked in San Francisco (near Presidio Heights), but commuted from Vallejo, then he may have used Highway 101 on a regular basis, passing through Marin County. Highway 101 straddles Shoreline Highway by just 724 meters, which we will return to shortly.

Here is an excerpt from Websleuths by Steph54 "On 28 December 1969, a man searching for driftwood on the beach at Bolinas Lagoon in Marin County found the nude body of Leona Roberts. It was later determined that a unique wristwatch was missing from the girl's wrist, but a Napa High School class ring given to her by a neighbor still remained on her finger. The tan dress she wore when last seen, along with two pairs of bell-bottomed pants, a blouse, a black purse and wallet, a key chain with car and house keys were also reported missing. There were marks on the wrists and ankles indicative of binding, but the coroner was unsure whether they occurred before or after death. The cause of death was reported as "due to viral infection of an unidentified species." It was also reported that there was "evidence of choking which could probably be linked to the virus." link. 

Leona LaRell Roberts had been abducted on December 10th 1969 from 749 Tormey Avenue in Rodeo. At about 5:50 pm a neighbor, Susan Clark, heard the sound of a girl screaming, followed by somebody running from the rear of the apartment. A suspicious male was observed many times between the front door and a blue station wagon, before he eventually drove away. The man was described as 25 years old, 5'8", short blond hair and wearing brown trousers and a jacket. A while later her boyfriend arrived home to find a disturbance inside the apartment, scuff marks near the back door and her red Volkswagen parked outside.

The same day, a potential Zodiac correspondence arrived at the Sacramento Bee newspaper containing a horoscope page with pasted wording. This communication entitled Day-By-Day Forecast For Cancer was pasted with the wording ZODIAC, WATCH, FLT 555 and BIRDS FLY SOUTH. The day after the Leona LaRell Roberts abduction, on December 11th 1969, a communication entitled Day-By-Day Forecast For Leo arrived at the San Francisco Newspaper Printing Company at Rincon Annex, again  with many pasted words, including FLT THREE OF A KIND. It was thought that the Day-By-Day Forecast For Leo may have been a sinister play on words for Day-By-Day Forecast For Leona Roberts, considering the date of her abduction and the mailing of this communication the following day.

A day-by-day forecast may have been an appropriate message considering her abduction on December 10th 1969 to the eventual discovery of her body eighteen days later at Bolinas Lagoon in Marin County. This is where Shoreline Highway comes into play, being just 724 meters from Highway 101, and a route that the Zodiac Killer may have commuted to and from work. Shoreline Highway runs alongside Bolinas Bay to Bolinas Lagoon where Leona Robert's body was discovered. When we consider the December 10th 1969 communication containing the words ZODIAC and BIRDS FLY SOUTH, coupled with the December 11th 1969 Day-By-Day Forecast For Leo and her body being discovered at Bolinas Lagoon, the following information may become relevant.

Bolinas Lagoon is a tidal estuary, approximately 1,100 acres in area, located in the West Marin region of Marin County, California, United States, adjacent to the town of Bolinas. The Pacific Flyway is a major north-south flyway for migratory birds in America, extending from Alaska to Patagonia. Every year, migratory birds travel some or all of this distance both in spring and in fall, following food sources, heading to breeding grounds, or travelling to overwintering sites. Along the Pacific Flyway, there are many key rest stops where birds of many species gather, sometimes in the millions, to feed and regain their strength before continuing. Some species may remain in these rest stops for the entire season, but most stay a few days before moving on. Wikipedia.     

Four months later, on April 19th 1970, Pat Tan, a woman of Eurasian descent was discovered hanging by rope and electrical cord from an oak tree near Bootjack Campground on Mount Tamalpais in Marin County. She was identified because of a key found in her pocket by Coroner, Keith Craig, which he traced to a Greyhound bus terminal and the eventual discovery of her address book. The question remains as to whether the death of Pat Tan was suicide or murder.

Bootjack Campground is located 553 meters from the Pantoll Campground along Panoramic Highway, which joins Shoreline Highway at its southern tip, Pat Tan's body was discovered hanging just 2.5 miles from the dump site of Leona Roberts at Bolinas Lagoon. Leona Roberts abduction was paralleled by two communications entitled Day-By-Day Forecast For Cancer and Day-By-Day Forecast For Leo, along with the pasted pseudonym of ZODIAC, as was the untimely death of Pat Tan, when the following day on the April 20th 1970, the Zodiac Killer mailed the 13-Symbol cipher containing THREE OF A KIND. However, this time it would be 888 instead of 555.

Two years later, on April 7th 1972, Isobel Watson (33) had just got off the bus on the evening of April 7th 1972, and was walking home along Pine Hill Road, Tamalpais Valley, Marin County at 9.00 pm, when a light colored vehicle veered towards her, knocking her to the ground. The driver exited his vehicle offering to take her home, but after she had refused his offer of apparent help a second time, the concerned citizen suddenly became enraged, pulling out a knife and stabbing the woman in the neck and shoulder. ​Her screams alerted the neighborhood, forcing the assailant into a hasty retreat from the scene. She was treated at Marin General Hospital and fortunately survived the brutal attack.

Her description of the man alerted investigators to a possible Zodiac connection, that of a man with heavy-rimmed black glasses, around 40 years of age, 5' 9" in height and short brown hair. It was not overlooked by police that the killer had attempted to lure the woman into his vehicle, not dissimilar to the method employed in the Modesto abduction of Kathleen Johns. Napa County homicide detective Kenneth Narlow believed in a greater than 50-50 chance of a Zodiac connection, bearing in mind the description given by Isobel Watson. Pine Hill Road, where the attack occurred, joins Shoreline Highway at its southern edge, just 4 miles from the Bootjack Campground and 7 miles from Bolinas Lagoon. Shoreline Highway joins Panoramic Highway only 1 mile from Pine Hill Road. So, had the attacker of Isobel Watson managed to lure her into his vehicle, would we have found her near Bootjack Campground or Bolinas Lagoon, just like Pat Tan and Leona Roberts? Of course, we don't know whether the Zodiac Killer had anything to do with the unfortunate events that befell these three women, but the location of Marin County and the proximity of Pine Hill Road, Bootjack Campground and Bolinas Lagoon is worthy of further investigation.     

The Concerned Citizen card was mailed from San Francisco and postmarked August 10th 1969, arriving one day after the article A Murder Code is Broken which featured in the San Francisco Chronicle newspaper. In this article "Vallejo Police Sergeant John Lynch, in charge of the investigation of the murders and of the cipher letter writer, asked The Chronicle to send Harden's code breaking worksheets to him for further checking; which was done". The Concerned Citizen communication (with attached 408 cipher key) was not mailed by Donald Harden, having been sent from either a genuinely helpful citizen or from the Zodiac Killer himself. When deciding which is the case, we can look at the typed message on the card (shown below).

For somebody who pleasures in the solving of cryptograms and word puzzles, while at the same time making basic spelling mistakes and errors in punctuation, seems rather reminiscent of somebody we have become accustomed to. Three months after this correspondence, the Zodiac Killer mailed the infamous 340 cipher, a curious blend of both word puzzle and cryptogram. This cipher had "paradice" and "slaves" criss-crossed on its canvas, with a full message beneath the superficial design. The canvas and cipher both contained the encoded words of "paradice" and "slaves", thereby continuing the theme from the 408 cipher, but on this occasion he seemed eager to add a little more complexity to its design.

The decoding of the 340 cipher revealed that the majority of the message effectively ran diagonally (one down, two across) in a cipher divided up into three parts of 9, 9 and 2 rows. The last two rows were composed of a curious blend of forward and backward words, which is standard fare in the construction of word search puzzles, as is the creation of diagonal wording running across a word search grid. When we couple this with the disguised "paradice" and "slaves" running down and across the center of the 340 cipher canvas, this cryptogram becomes the embodiment of cipher and word puzzle all rolled into one.

If that wasn't enough, the Zodiac Killer would mail two more communications on December 10th 1969 and December 11th 1969 with coherent messages in the form of a pre-printed horoscope, overlayed with cryptic messages pasted predominantly 90 degrees clockwise, running down the page. These two communications were entitled Day-by-day forecast for Cancer and Day-by-day forecast for Leo. The second coming the day after the abduction of Leona LaRell Roberts (16) on December 10th 1969, leading to the possibility that this was a further play on words by the Zodiac Killer, who may have used the phrase "forecast for Leo" to insinuate the future plight of Leona Roberts. He may have had no hand in the abduction of Leona Roberts, but it wasn't unusual for the Zodiac Killer to insinuate his involvement in crimes committed by others. 

The two pasted communications in December (with Hidden and FLT a component of both) must have taken some forethought, so the idea that these two communications have no meaning whatsoever, doesn't quite sit right. These messages may need decoding just like the 340 cryptogram, albeit in a slightly different way. The choice of two horoscopes, when we consider the contemporary speculation behind the Zodiac Killer's choice of pseudonym, may have some significance. These two communications were straddled by both Fairfield letters, the first of which (December 7th 1969) contained sections of ciphertext that married up with the beginning and end of the 340 cipher. The months of July, November and December certainly seemed one big cryptic puzzle for the Zodiac Killer, but was it "one of his pleasures" in August. 

On December 10th 1969 a paste-up horoscope communication was mailed and postmarked PM from Sacramento entitled Day-By-Day Forecast for Cancer, followed by a similar communication mailed and postmarked PM from San Francisco on December 11th 1969 entitled Day-By-Day Forecast for Leo. Not published in the newspapers, it was clear that both of these communications had the same author just one day apart. The following is a summary of the abduction and murder of Leona LaRell Roberts by Steph54 on Websleuths:

On Wednesday, 10 December 1969, 16-year-old Leona Larell Roberts worked her first day at a part-time job at the White Front Discount Store in Pleasant Hill. After her 1-5 p.m. shift, she drove to her boyfriend's apartment (749 Tormey Ave, Rodeo) where she planned to cook him dinner. At the time, Leona attended K's American Beauty College in Napa, where she also lived with her mother. Within 15 minutes of arriving at her boyfriend's apartment, a neighbor heard a girl scream. The neighbor called the sheriff and soon after heard someone running down the stairs at the back of the apartment house followed by the slam of a door from the direction of the downstairs apartment where Leona's boyfriend lived. When the boyfriend arrived, he saw Leona's red VW out front but did not find her inside the apartment. The apartment was dark and the back door was unlocked. He noticed scuff marks on the wall near the back door. He found that a pair of his pants had been removed from the bedroom closet and left on the living room couch, the belt missing. He noticed Leona's work smock crumpled on the couch. A sheriff's deputy arrived 30 minutes after the call. Another neighbor told the deputy of seeing a white male, about 25 years old, short blonde hair, acting suspicious. He walked several times from the front door to the rear of a blue station wagon before driving away. On 28 December 1969, a man searching for driftwood on the beach at Bolinas Lagoon in Marin County found the nude body of Leona Roberts.

From the postmark dates and times it is extremely likely the Forecast for Cancer communication was mailed prior to the abduction/murder of Leona Roberts, with the Forecast for Leo communication likely mailed after her abduction/murder. This meant that the author of the Cancer communication on December 10th in Sacramento traveled to San Francisco to mail the second correspondence. The most direct route is shown below and uses only Interstate 80. This journey between communications passes just 0.9 miles from the 749 Tormey Avenue residence from where Leona Roberts was abducted. 

Less than 24 hours after the abduction/murder of Leona Roberts, the Forecast for Leo communication arrived. Was the perpetrator using a play on words to hint that her forecast was in his hands? The Forecast for Cancer communication was emblazoned with the pasted text of Zodiac - and we know that the Bay Area murder has become synonymous with abduction and murder. How many abductions and murders occurred in the Bay Area on December 10th 1969? Yet here we have two sinister communications mailed in Sacramento, followed by San Francisco, where the most direct route using Interstate 80 passes just 0.9 miles from the abduction site of Leona Roberts, which is then followed by a communication entitled Forecast for Leo. If this is a coincidence, it is one hell of a lucky one.

The question arises though - was the author of the two communications the Zodiac Killer or an impostor? Had somebody close to Leona Roberts planned her murder, and by mailing these communications with the word Zodiac in bold lettering, attempted to shift the focus of the investigation onto the Bay Area murderer, thereby making him the convenient fall guy? However, if the author of the Cancer and Leo communications wanted to achieve this goal, why would he be so cryptic? By sending a correspondence with nothing more than a heading of Day-By-Day Forecast for Leo, you are leaving open the possibility that investigators will not make the connection between the communication and the abduction of Leona Roberts. If you are attempting to lay the abduction squarely at the feet of Zodiac, then you simply create a communication using the pseudonym Zodiac and mentioning Leona Roberts by name, thereby creating no ambiguity. This may put the ball back in Zodiac's court.   

But it doesn't end there. Two more Zodiac communications were mailed either side of the above two forecasts. The first was mailed on December 7th 1969 from Fairfield, with the second arriving from Fairfield on December 16th 1969. These again fall directly along Interstate 80. If the four communications were the work of the Zodiac Killer, then we have a murderer mailing a correspondence from Fairfield on December 7th, before traveling northeast to Sacramento, then abducting Leona Roberts in Rodeo and continuing on to San Francisco, before heading back to Fairfield on December 16th. The author of four consecutive communications would possibly be using one direct route back and forth.

The Bus Bomb letter mailed on November 9th 1969 claimed seven victims, while the Melvin Belli letter mailed on December 20th 1969 claimed a search for number nine and ten. The December 7th 1969 Fairfield letter claimed no update to victim seven, leaving open the possibility that the abduction and murder of Leona Roberts on December 10th 1969 was victim number eight.

Two pasted communications were mailed in close proximity to one another (or possibly in unison), postmarked December 10th and December 11th 1969. The first was the Day-by-day forecast for Cancer, and the second was the Day-by-day forecast for Leo, mailed from Sacramento to the Sacramento Bee newspaper and from San Francisco to the San Francisco Newspaper Printing Company, P.O. Box 3100, Rincon Annex, San Francisco respectively.

When trying to understand these communications, we have to consider why the author (or Zodiac) didn't just opt to paste the words on a postcard or greeting card in similar fashion to the '13 Hole' Postcard or Pines Card. In this instance he chose an astrology backdrop with dates for both communications, suggestive that the numerical dates were the key ingredient for the message to be understood. In a recent article we investigated the possibility that the Day-by-day forecast for Leo was in reference to the abduction and murder of Leona Roberts, hence why it was mailed at about the same time as her abduction on December 10th 1969. The same goes for the Day-by-day forecast for Cancer communication which I have added below.

Rubislaw32, a contributor to this site, was correct when he stated that the pasted section FLT 555 on the Cancer communication was taken from State Express 555 Filter cigarettes, When you consider the title of the communication Day-by-day forecast for Cancer and realize that the font used on the State Express cigarette packets is identical to the pasted triple 5 below, along with FLT being an acronym for filter, then it leaves little doubt as to the origins of this phrase. The bigger question is, why did the designer of the pasted communication place it originating from the position of November 9th, and what new purpose had he adopted the acronym for, if any? As stated in the previous article, we are dealing with an abduction and murder in December, so it is the numerical values that we likely have to focus on.

If you take a quick peek at the Leo communication, you will notice that the pasted wording FLT Three of a Kind (meaning 555) also begins at the 9th of the month. Two phrases, FLT Three of a Kind and FLT 555, both beginning on the 9th. Is that really just accidental? This was the numerical day before the abduction of Leona Roberts. The connection is speculative at best, but we have to consider that the FLT (the common strand between both communications) having been placed next to this date twice, has some relevance to the 9th - and quite possibly the impending abduction date of Leona Roberts. Find, Locate and Target, or Find Leona at Tormey, akin to the acronym of BTK used by Dennis Rader several years later, is one possibility for this pasted section. However, there are multiple possibilities pertaining to the motivation and meaning of the communication's designer.  

Another link to the State Express 555 cigarette company (albeit questionable) is where the designer of the Leo communication places the word Train - in the same section of dates as FLT Three of a Kind (see here). Obviously, Express and Train can be linked through the railways, but here is an extract from Wikipedia: "The idea for the State Express brand came from the U.S.in 1893. Sir Albert Levy, a London tobacco merchant, was visiting the United States. While in New York State, Levy was a passenger on the Empire State Express train, which allegedly broke land speed records as locomotive No.999, the “Queen of Speed” sped its way from New York City to Buffalo".  

In this communication we have Action Guide, Want, Watch and Birds Fly South all touching the date of November 18th. This date featured in the previous article with respect to the release date of the 1969 film 'Run a Crooked Mile', which was pasted beginning on November 18th 1969. I will merge the two communications together using three of the pasted sections and state that "I will consult my action guide, because I want to watch the film Run a Crooked Mile". Of course, I have no idea if this was the intention of the designer of both communications, which is why your input is invaluable in making some sense of these seemingly senseless pastings. One would reasonably expect them to have some purpose - particularly with regard to the dates and the phrases attached alongside them.  

One of the most prominent features on this communication is the pseudonym Zodiac, placed beginning on the date of the 20th. The next confirmed communication from the Zodiac Killer was the Melvin Belli Letter mailed on December 20th 1969. The connection to Leona Roberts was speculated upon in the last article: "On December 20th 1969, the Zodiac Killer mailed the Melvin Belli Letter, mimicking the words written in lipstick (supposedly by William Heirens) on the apartment wall of murder victim Frances Brown. She was discovered shot and stabbed multiple times in her 3941 North Pine Grove apartment in Edgewater, Chicago. The date of Frances Brown's murder was December 10th - the exact date that Leona Roberts was abducted from 749 Tormey Ave in Rodeo".

In the Leo communication the designer has placed a cross inside a circle on the dates of the 3rd, 4th and 5th. In this communication he has pasted Magic Amulet continuing onwards through the 6th, 7th and 8th. The only relevant Christian amulet I could find that looked similar to the design on the Leo communication "is the well-known amulet among Catholic Christians, that of the Saint Benedict medal which includes the Vade Retro Satana formula to ward off Satan. This medal has been in use at least since the 1700s, and in 1742 it received the approval of Pope Benedict XIV. It later became part of the Roman Catholic ritual". Wikipedia. If this was the intended symbol placed on the Leo communication, I have no idea why, other than a vague resemblance to the crosshairs of Zodiac, or the design on the December 16th 1969 Faifield Letter and October 27th 1970 Halloween Card.

All of the above are simple word association games involving numerical values, that may have no resemblance to the meaning of both the Day-by-day forecast for Cancer and Day-by-day forecast for Leo, but the possibility of a connection between the dates and words is a tangible one.

On December 20th 1969, the Zodiac Killer mailed the Melvin Belli letter claiming he may "lose control again and take his ninth or possibly tenth victim". The Zodiac Killer last stated his victim count on November 9th 1969, when he claimed "This is the Zodiac speaking up to the end of Oct I have killed 7 people". Therefore, victim number eight (if there ever was one) would have to fall between these two dates. However, in this article I will present some new information that could narrow down victim number eight to a period of just thirteen days, and add some intriguing connections to the murder of Leona LaRell Roberts (16) who featured in Robert Graysmith's 1986 Zodiac book. 

Just four days before the Melvin Belli letter arrived, the December 16th 1969 Fairfield letter was mailed to the San Francisco Examiner insinuating the author's involvement in the September 27th 1969 Lake Berryessa attack, by including a drawing and the wording "The Bleeding Knife of Zodiac." The same author had mailed a previous Fairfield letter on December 7th 1969 to the San Francisco Chronicle. This communication failed to acknowledge any current victim count, in conflict to the majority of his future correspondence - and he made no mention of victim number eight - leaving the very real possibility that victim number eight fell between the dates of December 7th 1969 and December 20th 1969. There are also three other mailings that point to the abduction and murder of Leona Roberts as a Zodiac victim, or at the very least, a claimed Zodiac victim, ending with the Melvin Belli letter on December 20th 1969 (the first anniversary of the Lake Herman Road murders). But first, let's outline the story of Leona Roberts, abducted from her boyfriend's house on December 10th 1969.   

On Wednesday December 10th 1969, Leona Roberts left her job at the White Front Discount Store in Pleasant Hill (560 Contra Costa Boulevard) at approximately 5:00 pm for the eleven mile journey to her boyfriend's (Greg V. Valo) apartment at 749 Tormey Avenue, Rodeo. This location is only 8 miles from the Lake Herman Road murder site. At about 5:50 pm a neighbor, Susan Clark, heard the sound of a girl screaming, followed by somebody running from the rear of the apartment. A suspicious male was observed many times between the front door and a blue station wagon, before he eventually drove away. The man was described as 25 years old, 5'8", short blond hair and wearing brown trousers and a jacket. A while later her boyfriend arrived home to find a disturbance inside the apartment, scuff marks near the back door and her red Volkswagen parked outside. 

Here is an excerpt from Websleuths by Steph54 "On 28 December 1969, a man searching for driftwood on the beach at Bolinas Lagoon in Marin County found the nude body of Leona Roberts. It was later determined that a unique wristwatch was missing from the girl's wrist, but a Napa High School class ring given to her by a neighbor still remained on her finger. The tan dress she wore when last seen, along with two pairs of bell-bottomed pants, a blouse, a black purse and wallet, a key chain with car and house keys were also reported missing. There were marks on the wrists and ankles indicative of binding, but the coroner was unsure whether they occurred before or after death. The cause of death was reported as "due to viral infection of an unidentified species." It was also reported that there was "evidence of choking which could probably be linked to the virus." link.

Leona Roberts time of death has not been pinned down, but it has been estimated at approximately ten days to two weeks before her discovery, somewhere between December 14th and 18th 1969, just before the mailing of the 'Melvin Belli' letter. It is this letter that may contain a subtle clue to the abduction of Leona Roberts on December 10th 1969. The Zodiac Killer wrote in the Melvin Belli letter "I will loose all controol of myself. Please help me. I can not remain in control for much longer" (edited). This mirrored closely a message written in lipstick on the wall of a murder victim in Chicago in 1945. The message read "For heavens Sake catch me Before I kill more. I cannot control myself". Frances Brown was discovered at her 3941 North Pine Grove apartment in Edgewater, Chicago. She had multiple knife wounds, along with a bullet wound to the head. William George Heirens would eventually be convicted for this and two other murders, and jailed for life. But why would the Zodiac Killer seemingly pluck the wording from a murder case 24 years prior? Was it a clue to his eighth victim? Frances Brown was discovered on December 10th, exactly the same date as the abduction of Leona Roberts from the 749 Tormey Avenue apartment. She was abducted and likely restrained for approximately one week before her eventual murder.

Bearing in mind that the Zodiac Killer certainly mailed the two Fairfield letters on December 7th 1969 and December 16th 1969, is it possible he had held the young girl somewhere in the vicinity of Fairfield, California, before eventually driving her body 65 miles to Bolinas Lagoon, located in the West Marin region of Marin County? There are another two potential Zodiac communications that may add weight to the Fairfield connection, mailed from Sacramento and San Francisco on December 10th and 11th of 1969. 

On December 10th 1969 (again, the date of Leona Roberts abduction), the Cancer FLT 555 Paste-Up Message was mailed from Sacramento to the Sacramento Bee newspaper, containing the wording "Action Guide, Watch, Want, Zodiac, Birds Fly South, Hidden, FLT 555 and Magic Amulet." The word "watch" has some relevance, regarding the missing "unique wristwatch" from the body of Leona Roberts, however, the phrase "Birds Fly South" may hold the biggest clue of all. Was the 'Cancer' card representative of the abduction of Leona Roberts and the invasion of her 'home' by an unwanted presence? A deadly invader of sorts. Her "cause of death was reported as "due to viral infection of an unidentified species."​

The following day, December 11th 1969, a similar paste-up message was postmarked San Francisco, and mailed to the San Francisco Newspaper Printing Company, P.O. Box 3100, Rincon Annex, San Francisco. If Leona Roberts was one day into her captivity and was to be held under duress for several days to one week, then the December 11th 1969 mailing was the most pertinent communication of all. It was entitled DAY-BY-DAY FORECAST FOR LEO, containing the words "A THRILLING PHENOMENON" and "C HARRY OTT can be Ridden", along with FLT Three of a kind, Hangups, Hidden, Train, time, Now, dangerous ride, warring love emotions and Ember's Lucky.  If Leona Roberts was being kept "hidden" in Fairfield, was the Zodiac Killer preparing to give us day-to-day updates and forecasts regarding the captivity and current status of Leona Roberts? The title of the communication may be a play on words by the Zodiac Killer: "DAY-BY-DAY FORECAST FOR LEONA ROBERTS". Unfortunately, the forecast for Leona Roberts would turn out deadly in a matter of days.

The murderer of Leona Roberts may have known the location he was going to dispose of her body in advance. The phrase "Birds Fly South" could very well be a reference to his chosen dumping ground of Bolinas Lagoon, somewhere he may have frequented on a regular basis. "One of the main attractions at Bolinas Lagoon are the millions of shorebirds and other waterfowl that visit the mudflats and quiet waters each year. The lagoon is one of the most important stopover points for birds that migrate along the Pacific Flyway. The lagoon is also home to a thriving population of harbor seals that can always be seen at low tide when they haul out to rest and replenish their depleted oxygen supply. Wildlife at this preserve should be observed at a respectful distance; seals that are flushed into the water suffer if they aren’t allowed to spend a minimum amount of time drying out. Birds may be exhausted and near starvation after having traveled nonstop for several hundred miles to reach the safe haven of the lagoon". Marin County Parks.

Bolinas Lagoon is a tidal estuary, approximately 1,100 acres in area, located in the West Marin region of Marin County, California, United States, adjacent to the town of Bolinas. The Pacific Flyway is a major north-south flyway for migratory birds in America, extending from Alaska to Patagonia. Every year, migratory birds travel some or all of this distance both in spring and in fall, following food sources, heading to breeding grounds, or travelling to overwintering sites. Along the Pacific Flyway, there are many key rest stops where birds of many species gather, sometimes in the millions, to feed and regain their strength before continuing. Some species may remain in these rest stops for the entire season, but most stay a few days before moving on. Wikipedia.

So, we have the Melvin Belli letter and the December 10th murder of Frances Brown and abduction of Leona Roberts, linked by the wording in the correspondence, the "DAY-BY-DAY FORECAST FOR LEONA ROBERTS" mailed on December 11th 1969, and the dumping ground of Bolinas Lagoon, where "Birds Fly South". 

Other crimes loosely linked to the Zodiac Killer (and close to Bolinas Lagoon) involve the hanging of Pat Tan on Mount Tamalpais on April 19th 1970 (one day before the 13-Symbol cipher communication,) as well as the Tamalpais Valley Attack on Isobel Watson in the North Bay Area. Isobel Watson (33) had just got off the bus on the evening of April 7th 1972, and was walking home along Pine Hill Road, Tamalpais Valley, Marin County at 9.00 pm, when a light colored vehicle veered towards her, knocking her to the ground. The driver exited his vehicle offering to take her home, but after she had refused his offer of apparent help a second time, the concerned citizen suddenly became enraged, pulling out a knife and stabbing the woman in the neck and shoulder. ​Her screams alerted the neighborhood, forcing the assailant into a hasty retreat from the scene. She was treated at Marin General Hospital and fortunately survived the brutal attack. Her description of the man alerted investigators to a possible Zodiac connection - that of a man with heavy rimmed black glasses, in his early 40's, 5' 9" in height and short brown hair. It was not overlooked by police that the killer had attempted to lure the woman into his vehicle, not dissimilar to the method employed in the Modesto abduction of Kathleen Johns. Napa County homicide detective Ken Narlow believed in a greater than 50-50 chance of a Zodiac connection, bearing in mind the description given by Isobel Watson.

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