The Zodiac Killer was correct when he placed Betty Lou Jensen's feet facing west, along with his apparent knowledge of the the infrequently traveled Lake Herman Road as a location for courting couples, yet, somehow became completely disoriented when making one turn off Columbus Parkway to the payphone at Springs Road and Tuolumne Street.
When Zodiac made the Blue Rock Springs and Lake Berryessa phone calls, he rang the police. Therefore, it follows logically, that any directions given would be to direct the police to the crime scene from their location. In these cases, the Sheriff's Office was located at the junction of Virginia and Tuolumne Streets, the Vallejo Police Department at 111 Amador Street, and Park Headquarters at Lake Berryessa.
In the aftermath of the call, she then had to remember its totality, word for word, along with the exact sequence of the message and any pauses or sentence breaks within it, to fully recollect the message delivered in its correct context.
The message shown above was composed of 46 words, delivered in approximately 20 seconds. The chances of recalling this amount of words in exactly the correct order and context, one could suggest is extremely unlikely and unrealistic. There is often the false assumption that the Zodiac Killer was incorrect in his delivery of the message, whereas, it is a far more credible proposition that Nancy Slover simply recalled the message incorrectly.
We have previously shown, that by inserting one break into the message, it reads perfectly from a directional standpoint, although incorrectly regarding the distances given. Here is the message with the break or pause inserted "I want to report a double murder. If you will go one mile east...... on Columbus Parkway to the public park, you will find the kids in a brown car. They were shot with a 9 mm Luger. I also killed those kids last year.... Good-bye."
This message now makes sense regarding a killer directing police from 111 Armador Street to Blue Rock Springs Park. However, there are many alternatives.
It can be seen that responding officers heading away from the police station would be traveling along Springs Road or Georgia Street, approximately 2 miles east, as opposed to the 'supposed' one mile east given in the phone call. But, this may not be the case if Nancy Slover jumbled her recollection of the message.
The widely portrayed message reads ""I want to report a double murder. If you will go one mile east on Columbus Parkway to the public park, you will find the kids in a brown car. They were shot with a 9 mm Luger. I also killed those kids last year.... Good-bye." The important parts to look out for, are the words "to" and "one" in the second sentence. This shall now be flipped to give coherent and correct directions from the police station to the public park.
"I want to report a double murder. If you will go two miles east. then one mile on Columbus Parkway to the public park, you will find the kids in a brown car. They were shot with a 9 mm Luger. I also killed those kids last year.... Good-bye"
The Zodiac Killer wasn't going to deliver fractions of distances in his payphone call, so rounded 1.88 miles east to 2 miles, and 1.5 miles to 1 mile, now giving a perfectly reasonable set of directions and distances in his message to Nancy Slover. Unfortunately, yet understandably, it was recalled incorrectly through memory and talking over the killer during the first part of the message. We must not make the blind assumption that the "substance of the statement," was in fact a perfect transcription of what the Zodiac Killer actually said that night. If it was a perfection transcription, then it makes little sense regarding a call directing the police to the crime scene. If it makes little sense, one can argue it wasn't spoken.
"I want to report a murder, no, a double murder. They are two miles north of Park Headquarters. They were in a white Volkswagen Karmann Ghia ...... I'm the one that did it".
"I want to report a murder, no, a double murder. There are two people one mile north of Park Headquarters. They were in a white Volkswagen Karmann Ghia ...... I'm the one that did it".