ZODIAC CIPHERS
RICHARD GRINELL, COVENTRY, ENGLAND
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THE INSPECTION TOUR ON THE FIFTH

7/13/2024

 
PictureDonna Ann Lass (25)
The phone caller to the Sahara Tahoe Hotel & Casino was most likely the murderer of Donna Lass, but who was it that rang security guard Gordon Petrovich on either September 7th or 8th 1970 stating that he was "Mr. Davis" and claiming that the young 25-year-old nurse would not be coming to work because she had been called out of town for a family illness? This individual appeared to know two crucial factors about Donna Lass: [1] That her family lived out of town (they lived in South Dakota), and [2] The surname of her landlord. If she was murdered in the few hours after she was last seen at 1:50am on September 6th 1970 at the casino, they should have made the phone call to buy time on that day but they didn't. A complete stranger killing Donna Lass after she left the casino on the 6th wouldn't have known the name of her landlord, and the residency of her family. 

The private investigator's report stated Mr. Davis had accompanied subject (Donna) on an inspection tour of the apartment on September 5th 1970, and his inventory sheet is dated September 5th 1970. Also with him was Frank Desimone". Even if this was 9:00am in the morning, Donna Lass, had she set off for work at about 5:00pm that evening (for her 6pm shift), would only have been living at her new apartment for 8 hours if she was abducted outside the casino or on her way home in the early morning hours of the 6th. It would mean she had never slept at the 3893 Pioneer Trail Road apartment.

Several possibilities have been put forward. She could have been coaxed from her work station by somebody claiming they needed urgent assistance in the parking lot and abducted, or she could have been lured to somewhere within the casino, murdered, and surreptitiously removed at a later date. Donna may have been offered a lift home and murdered in her apartment by somebody she trusted, or driven elsewhere. Or she could have walked home and been abducted along the way, or the moment she arrived at her 3893 Pioneer Trail Road home. Another possibility is that Donna Lass could have arrived home safely and gone to sleep, to be murdered at this juncture by somebody entering her apartment. She could also have been murdered later, on September 6th, 7th or 8th (depending when Gordon Petrovich received the mystery call)..We could wade through all these options forever, so the best approach is to discover how the phone caller knew the name of her landlord and that her family lived out of town. 

Picture3893 Pioneer Trail Road
Testimony from Nick Davis (Donna's landlord} stated that he received a call from the Sahara Tahoe Hotel security office on September 11th 1970 enquiring on the whereabouts of Donna Lass (so they knew he was her landlord and knew his phone number). This means that Donna Lass could have informed the casino of her new address and the name of her landlord when she arrived to work on September 5th 1970, or the Sahara Tahoe Hotel security were given this information by somebody else. But who else would have known that she now lived at the 3893 Pioneer Trail Road apartments, let alone the name of her landlord, "Mr. Davis", by the time she was last seen?

​Donna inspected the apartment on September 5th 1970, accepted the accommodation and then went to work a few hours later, where she was last seen at approximately 1:50am on September 6th 1970. The only people that could possibly have known this information would have been the casino itself, or friends/work colleagues that she told between the time she signed the rental agreement on September 5th 1970 and 1:50am on September 6th 1970. This information is not going to be known by a random abductor from the casino parking lot, or a stranger snatching her from the street while walking home. We also have to factor in that the perpetrator likely knew that her family lived in South Dakota, and by making the phone call claiming a family illness out of town, he was affording himself plenty of time to cover his tracks.

​If he had known Donna Lass when she moved to South Lake Tahoe in early June 1970, he had plenty of opportunity to know about her family circumstances in the intervening 3 months, but could only have learned about her new apartment and the name of her landlord from the moment she put pen to paper on September 5th 1970 to the time she was last seen. Even if he was the person who recommended the apartment complex to her in advance of September 5th 1970, it is not certain she would have accepted the accommodation until after the inspection. This information could only realistically have been known after she signed the contract. 

PictureThe Sahara Tahoe Hotel & Casino
While working from 6:00pm to 1:50am on September 5th and 6th 1970, what work colleagues and friends could she have told about the name of her landlord - who would then make a mental note of this name for the purpose of a murder they knew they were soon going to commit - to use on September 7th or 8th as a delaying tactic. Does this sound plausible? If Donna had informed the casino of her address and the name of her landlord when arriving for work on September 5th 1970, the only people who would know this information, were the people who could reasonably gain access to her written details.

Without access to this information, the notion that somebody would make a conscious decision to remember the spoken mention of her landlord's name (had she ever told anybody), knowing they were going to kill Donna Lass in the coming hours and then make a phone call to the casino they worked at, or frequented as one of her male friends, takes some believing. But if the person who made the phone call using the name "Mr. Davis" had access to this written information at the casino, he is in danger of drawing the police to people who worked at the casino, including himself. It is possible that this was a mistake by the killer, who was desperate to buy time by using the credible name of her landlord to deliver the message. 

​Somebody who knew Donna Lass had signed the rental agreement at the 3893 Pioneer Trail Road apartments and knew the landlord's name, could have been another resident at the complex. Such a person had the opportunity to abduct her if she had made it back to this location in the early morning hours of September 6th 1970 (or on September 7th/8th), but how many people at this complex would Donna Lass have told about her family "living out of town" in the few hours between signing the contract and leaving for work? In those few hours she could have spoken with a neighbour who asked where she had moved from - and at some point she told them she was originally from South Dakota. This scenario isn't implausible.    

PictureBrynn Rainey (27)
On November 18th 1970 the private investigator interviewed taxicab driver Raymond Jacobs, who lived at apartment 11 of the 3893 Pioneer Trail Road complex when Donna Lass went missing. Her apartment was number 6. Sometime between September 6th 1970 and November 18th 1970 he had moved to 3780 Aspen Avenue, a multi-family residence, 530 meters south of the 3893 Pioneer Trail Road apartments. He stated "he observed the subject on many occasions, and that he drove a cab on the street at the same time the subject was getting off work, but had never seen her on the way home walking. He had not observed any male companions around her apartment on any occasion". Bearing in mind Donna Lass moved into the apartment on September 5th 1970 and was last seen at 1:50am on September 6th 1970, how did he "observe the subject on many occasions" and how could he possibly have observed "male companions around her apartment on any occasion". Only if Donna Lass was alive on September 5th, 6th and 7th could this be somewhat true.

The only way Joseph Stephen Holt, responsible for the murders of ​Brynn Rainey (27) in 1977 and Carol Andersen (16) in 1979, could have reasonably known the name of Donna's landlord and that her family lived out of town, was if he was either in the casino on September 5th or 6th 1970 and had picked up this information by word of mouth, or had coerced this information from her for the purpose of the phone call. It's unlikely a stranger to Donna would need to force information from her to to buy time, yet somebody known to her may want to create this necessary breathing space, knowing that they could come under suspicion, Forcing information from somebody you've abducted to create a delaying phone call isn't the likeliest of scenarios, however, since we now know that Joseph Stephen Holt was responsible for the murder of Brynn Rainey in 1977, in which a phone call was made to her place of work (the Sahara Tahoe Hotel) to excuse her absence, it doesn't seem inconceivable in 1970. After all, both Donna Lass and Brynn Rainey's family lived a considerable distance from South Lake Tahoe, in South Dakota and Ohio respectively. I still doubt the involvement of Joseph Stephen Holt in the murder of Donna Lass, so if it isn't him, the focus should still remain on the Sahara Tahoe Hotel and anybody that knew she signed that rental agreement with Nick Davis just a few short hours earlier.

FURTHER READING: THE MYSTERIOUS PHONE CALL TO THE CASINO RE-EXAMINED ​

Joseph
7/13/2024 03:27:50 pm

Although we still don't know who, I believe the facts you have stated narrows down the list of suspects. I began listening to "this is the zodiac speaking" podcast again this morning. I became interested in the ballistics of the Lake Herman road crime.

Richard
7/13/2024 04:30:13 pm

I think I have found something else which may narrow down the possibilities even further. However, it does rely on one assumption. Still looking into it though. The ballistics at Lake Herman road, coupled with the autopsy of Betty Lou tells us a lot.

Paul C.
7/18/2024 04:56:55 pm

The Sahara Tahoe was not only a casino, it was a quite large hotel. I assume the nurse's duties involved responding to calls from rooms in the hotel. Is there any confirmation of this? This seems a possible abduction scenario I don't see discussed.

Tahoe27
8/6/2024 04:02:09 pm

Regarding the mysterious phone calls about an illness in the family....in the P.I. report it states (basically) that the "illness in the family" was probably an assumption of the Douglas County Undersheriff.

Neither the landlord, Nick or Gordon, the security guard, got a phone call from anyone about it. Gordon heard from Nick about the (possible) illness. Nick never says he got a mysterious call.

Seems like a basic misunderstanding. If this is the case, there have been years of unnecessary assumptions...if it wasn't her killer at all.

Just throwing that out there.

Sandy Betts link
8/6/2024 04:35:25 pm

Thank you Tahoe27, that is very important information! It is a shame, all these years, people were led to believe both calls were made. I read recently, one call was made, but now none. This opens the door to more possible suspects. I believe it was Zodiac who abducted her. And the clues on the postcard were good clues. I know Richard had it figured out!


Comments are closed.
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