In later years William Crow would later state "I never told the sheriff who interviewed me that the car I encountered was a Valiant. As I recall, as I was attempting to describe the car, the sheriff came up with a “Valiant”. In the years that have passed, when I have shared the events of that night, I have described the car as a four-door light-colored Chevy". The question arises, how do we interpret these overlapping features.
The recollection of William Crow appears however, an often overlooked feature of this case, and if true, the activity he described within 75-90 minutes of the actual double murder, at the identical location should not be underestimated. Whether William Crow saw one or two Caucasians is open to scrutiny, and although he claimed the Sheriff 'suggested' the Valiant, his later recollection of the occupants was less than clear, stating "After some moments, the other car turned around in the roadway and went back down the road from which we had come. I kept making macho statements, but not totally without some sense about me, I drove home. I did not see the car again. I could not see the passenger seat, but the driver was a man with short hair and glasses. I did not see his specific facial features." Reading between the lines, if he couldn't see the passenger seat, there could have been two occupants. This may be significant when considering the sighting of Stan and more importantly the report issued by the Department of Justice, Bureau of Criminal Identification and Investigation, conducted by David Burd regarding the murder of David Faraday and Betty Lou Jensen.
'The following exhibits were submitted  Bullet from Faraday's body.  Two bullets from Jensen's body.  Bullet found in panties of Jensen.  Five Super X .22 cartridge cases found at scene by coroner.  Four Super X cartridge cases found at scene by Sgt Silva.  One bullet found on top of 1961 Rambler.  One bullet found in floor mat, left side storage area of 1961 Rambler.  One bullet found on ground near Jensen's body.  Purple dress of Jensen.'
What is important is how you interpret these findings.The report continued 'Intercomparison of the cartridge cases in items  and  indicate that all were probably fired from the same weapon and all are the same make and type of ammunition. Due to the lack of sufficient unique structure it appears that considerable difficulty will be encountered in positively identifying the responsible weapon if it should be recovered.' This seems to indicate that nine of the casings found at the crime scene were likely fired from one weapon. However there were ten casings recovered. Did the final casing match the other nine, why is this not mentioned in  through . What is important mind is the following statement
'All bullets submitted were Western copper coated .22 long rifle bullets, Although some were damaged, it was possible to determine ALL had 6 right hand groove class characteristics.' This is not exactly what was documented, one important part has been left out. All had the '6 R H' groove characteristics, 'apart from item' '.
Item  was the bullet recovered from David Faraday and didn't have these characteristics. Is this the proof that more than one person was involved in the Lake Herman Road murders. It would seem highly unlikely the Zodiac Killer fired 9 shots with one weapon, but used a similar model, yet separate gun to murder David Faraday. Was the murderer of David Faraday the assailant given the responsibility of subduing him, possibly restraining him from behind by a left handed shooter, while a second subject initiated the attack and murdered Betty Lou Jensen. Does this ballistic evidence suggest there were two shooters at Lake Herman Road on December 20th 1968, especially considering the suspicious activities experienced by William Crow only 90 minutes earlier, possibly involving two Caucasian males, and the long held belief the killer or killers were opportunistic by nature, cruising up and down Lake Herman Road looking for potential victims. Or were the murders planned in advance by two or more assailants. The answer in part may begin with 'Item '.