They will likely state that Donna Lass worked in the Presidio Park at the Letterman General Hospital and lived at 4122 Balboa Street, San Francisco. The Zodiac was last observed entering the park via Julius Khan playground.
A reminder from Harvey Hines 120 page report on Lawrence Kane:
"Now, according to John Miles, I find that Kane lived at 217 Eddy Street in San Francisco prior to his moving to South Lake Tahoe. In looking at an area map of San Francisco, I found 217 Eddy Street appeared to be only about two to three blocks from where Paul Stine picked up the Zodiac on October 11th 1969. I then called inspector Dave Toschi at the San Francisco Police Department and got more details on the Stine killing. Toschi said they had determined the killer had called for a cab using the public payphone located at Union Square. Toschi said the cab picked the killer up and drove to the corner of Washington and Cherry Streets. At this point the cab driver was shot in the head. The killer was then seen by three witnesses from a residence nearby, wiping down the cab. Apparently wiping away fingerprints. Toschi said he also cut away a portion of Stine's bloodied shirt. After doing this, he calmly walked away in the direction of the Presidio Army Installation.
Two police officers, Don Foukes and Eric Zelms, heard the first radio broadcast and went directly to the area. The first broadcast, however, according to Toschi, erroneously identified the shooter as a black man. As Zelms and Foukes approached, they saw a white male walking toward the Presidio in the direction of Letterman General Hospital. They briefly stopped and asked him if he had seen a man with a gun. He told them he had just seen a man waving a gun and running the other direction. The two officers then hurriedly left in search of the black man.
Now we have the Zodiac running into the Presidio in the direction of Letterman General Hospital. The very place that Donna Lass worked. Also, in looking at the area map, I found that Lass lived six blocks south in the 4000 block of Balboa. That meant the Zodiac Killer started his ride near where Kane lived and ended it several blocks away where Donna Lass lived and worked.
During the time she worked in San Francisco she lived at 4122 Balboa Street with a roommate named Carol Emerich. Emerich was also a nurse. According to the employment records, Lass was working a late night shift in October of 1969 when the San Francisco cab driver, Paul Stine, was killed by the Zodiac."
The 340 cipher will remain unsolved, despite claims to the contrary in the preview at the end of episode four.
The only interesting feature yet to be resolved, is the DNA testing of Cheri Jo Bates' trousers. Hopefully it will generate a full DNA profile and provide some answers in the Riverside debate once and for all.