The two newspaper articles on April 30th 1971 and May 1st 1971 covered the arrest, arraignment and questioning of Karl Francis Werner, stating "He was immediately advised of his rights concerning any statements he may make and legal representation to which he is entitled, the detectives said. Werner was then taken to the scenes of the crimes. Late yesterday he was undergoing questioning. The detectives would not reveal what statements, if any, he had made concerning the killings of the three girls". The Zodiac Killer would respond with "Stop listening to phonys", desperately attempting to appeal to the San Francisco Chronicle and law enforcement that Karl Francis Werner was not the killer of the three girls. He was effectively telling investigators to not accept any admissions by Werner because he was the real killer. Up to this point, the Zodiac Killer had only claimed the murders of Snoozy & Furlong on August 3rd 1969, not the murder of Kathy Bilek, which occurred one month earlier on April 11th 1971 in the woods of Villa Montalvo in Saratoga. He now had to face the stark choice of abandoning the two victims he had claimed for nearly two years, or add Kathy Bilek to his ever burgeoning list. He had to either abandon two or embrace all three. It isn't surprising he chose the latter.
The newspapers covered the severity of the injuries sustained by Snoozy, Furlong and Bilek, graphically describing the fact "Miss Bilek was stabbed 49 times with a short-bladed knife", while "Furlong and Snoozy were both stabbed more than 100 times with a similar weapon". The Zodiac callously responded, by not only threatening a further three kids, but by stating that he would "send a patch of human skin if their is some left over". This was obviously meant to suggest that after so many wounds on his victims, he would be lucky to find any undamaged skin left to mail.
The wording in the letter may also pinpoint the exact day this communication was postmarked. The two articles were published on April 30th 1971 and May 1st 1971, the latter of which was a Saturday. Therefore, his wording of "If this is not on your front page in a week" could suggest it was mailed over the weekend and postmarked Monday, May 3rd 1971.
The Zodiac Killer now had one thing left to do - retrospectively claim the April 11th 1971 murder of Kathy Bilek in the woods of Villa Montalvo in Saratoga. He would do this on July 13th 1971, when he mailed the pasted Monticello card to the San Francisco Chronicle with the wording "Near Monticello Shought Victims 21 ...... In The Woods Dies April". The only unanswered question about this card was the reference to "Near Monticello". If we travel a few miles east of where Kathy Bilek was murdered, we arrive at the neighborhood of Monticello in San Jose. The neighborhood of Monticello holds one crucial secret as to why the Zodiac Killer wrote this on the July 13th 1971 card. It is the burial site of Kathie Snoozy, laid to rest in the Oak Hill Memorial Park, and forever the phonetic namesake of Kathy Bilek (although Zodiac would have read the spelling of Kathie as Kathy in the majority of newspapers). The Monticello card was not only designed to suggest the Zodiac Killer was the murderer of Kathy Bilek, but it pinpointed the burial site of Kathie Snoozy and his connection to the San Jose murders on August 3rd 1969. The Monticello card effectively bound the murders of all three girls together. It was a sinister communication, but extremely well designed. This should give you pause for thought when considering the Pines card mailed on March 22nd 1971. When the Sierra Club section of this card is placed over Clair Tappaan Lodge on the north western edge of Lake Tahoe, the punched circle falls over the Donner Memorial State Park. Two names, Donna and Kathy, embedded in two pasted cards under the banner of "Memorial" - and designed as an epitaph to victims he wanted us to believe were his.