On September 19th 1970, according to the testimony of former Monte Verdi apartments manager Nick Davis, he first learned that Donna Lass "had been called out of town for a family illness" on September 11th 1970 after he received a phone call from the Sahara Tahoe Hotel. After receiving this call, he made a phone call to Bob Morgan of the South Lake Tahoe Police Station, who revealed he had received a phone call from the Douglas County Sheriff's Office about Donna Lass and the "sickness in the family". Nick Davis then rang back the Sahara Tahoe Hotel on September 11th 1970 and informed them of the "sickness in the family", that he believed security guard Gordon Petrovich thought was on the date of September 7th or 8th. This makes little sense.
If the Sahara Tahoe Hotel had received a call to Gordon Petrovich on September 7th or 8th that Donna Lass had left town for a family illness - and we assume they had phoned Nick Davis on September 11th 1970 to inform him of this information - then he wouldn't have first learned about the "family illness" from Bob Morgan of SLTPD (which he claimed) - and there would have been no reason to ring back the Sahara Tahoe Hotel to inform them of a "family illness", if they were the ones who told him in the first place.
If the Sahara Tahoe Hotel just contacted Nick Davis on September 11th 1970 enquiring about the whereabouts of Donna Lass, from which he contacted Bob Morgan and learned that Donna Lass had been called out of town for a family illness, then somebody must have reported the "family illness" to the Douglas County Sheriff's Office before Nick Davis discovered this fact. This must have been the Sahara Tahoe Hotel after Gordon Petrovich received the "family illness" phone call on September 7th/8th from somebody claiming to be Mr. Davis, who sometime between September 7th/8th and September 11th must have phoned the Douglas County Sheriff's Office expressing the concerns of the Sahara Tahoe Hotel when Donna Lass failed to return to work after the Labor Day weekend.
The Sahara Tahoe Hotel, having previously received a phone call on September 7th/8th that Donna Lass wouldn't be coming to work because of a "family illness", may have become concerned after a couple of days with no further news or contact from Donna Lass, so reported their concerns to the Douglas County Sheriff's Office, who informed the South Lake Tahoe Police Department. The Sahara Tahoe Hotel, being concerned employers, could have then contacted Nick Davis on September 11th 1970 asking on the whereabouts of his tenant because Donna had now failed to turn up for work for three days or made any phone calls to them in person explaining her current status, but the Sahara Tahoe Hotel could have failed to mention to Nick Davis the "family illness" part of the story, just her continuing absence from work (or Nick Davis failed to remember this part of the message). Nick Davis, taking these concerns on board, then contacted the South Lake Tahoe Police Department and was informed of the initial reports of a "family illness" they had received, from which, Nick Davis returned the call to the Sahara Tahoe Hotel on September 11th 1970 and informed them of the "family illness" (which they already knew because of the phone call to Gordon Petrovich on September 7th/8th). It would have served no purpose whatsoever for the killer to have phoned the Douglas County Sheriff's Office to inform them of a "family illness" concerning Donna Lass. Therefore, if Nick Davis didn't make the phone call to Gordon Petrovich on September 7th/8th (as he stated), then somebody claiming to be Nick Davis must have made that call.
In light of the disappearance and murder of Donna Lass, a phone call on September 7th/8th making false claims of a "family illness" and mimicking the landlord of Donna Lass, could only have realistically been done for one reason. And that reason would have been nefarious. If the impersonator of Nick Davis knew the name of "Mr. Davis", it is extremely likely that the murderer of Donna Lass knew where she lived and knew (at least) the surname of her landlord. This familiarity with Donna Lass and her life may indicate somebody close to the young 25-year-old nurse, who knew her family lived 1500 miles away (out of town), and knew that such a phone call would buy time. The man with the blonde hair, spotted with Donna Lass on September 7th 1970 by Mrs. Dorothy Cullison, walking in the direction of her apartment complex - who never came forward to police - must be the number one suspect in the murder of Donna Lass (if Mrs. Dorothy Cullison wasn't mistaken).
READ THE PRIVATE INVESTIGATOR'S REPORT
BUS TRIPS DIRECT TO THE SAHARA TAHOE HOTEL & CASINO FROM THE BAY AREA