However, if the police hadn't spoken to anybody other than Mageau regarding the color of Zodiac's car, then this attempt to misdirect the police would have been less than convincing and immediately disregarded. His efforts at misdirection would have been a complete waste of time and ink. Bearing in mind that the Zodiac Killer placed the negro male eyewitness observing him at the payphone as he was "walking by", the logical inference when he stated "The man who told police that my car was brown was a negro", was that the Zodiac Killer saw the negro male chatting to police somewhere in the vicinity of the payphone at a later time. We know that a responding officer left the Blue Rock Springs crime scene after the location of the payphone was traced in order to secure the location until an I.D. technician could dust it for potential fingerprints.
It can be argued that the over-descriptive nature of "The man who told police that my car was brown was a negro about 40-45 rather shabbly dressed", highlighting his approximate age and attire, and selecting a minority demographic, was designed to bring this person to life. But what if the Zodiac Killer described the man in detail to prove to police he was actually observing their interaction with him by the payphone, meaning that Zodiac still had eyes on that payphone at 12:50am, or even later. Even if the payphone call (at 12:40am) was traced almost immediately, a police officer traveling from Blue Rock Springs to that payphone, couldn't have arrived much earlier than 12:50am. Did the Zodiac Killer live nearby, and/or did he just hide in the area to observe police activity around the payphone, hitting upon gold when he saw the black male, who was still in the area, conversing with the responding officer. As stated earlier, if no such interaction took place between police and a negro male by the payphone, then his claims in the August 4th 1969 letter would have had little impact with law enforcement. On the other hand, the Zodiac Killer taunting police in a letter by providing evidence he was still near the payphone at least 10 minutes after the call to Nancy Slover, may have been a little jarring. A negro male that police wouldn't want to confirm to the newspapers, just like they concealed the police sighting of a potential Zodiac on Jackson Street two months later.
Robert Graysmith may have had some knowledge of the operators actions that morning when he stated "After he hung up, the killer must have stood for a minute in a lighted phone booth". One would have expected the Zodiac Killer after declaring he was responsible for four murders from a payphone close to the police station, to have left the payphone immediately and headed back to his vehicle, which he claimed was alongside him in his August 4th 1969 letter. Yet according to Graysmith he waited in the payphone for at least one minute before it began to ring. The only logical reason why the Zodiac Killer was still in the payphone after a minute to hear it ring and subsequently remove the receiver, was if he saw the black man heading in his direction and used the payphone sides as a shield to his identity. He had just made a phone call to police claiming murder, so it would have been human nature upon seeing an approaching black man to remain concealed in the payphone, head down, and open its door to extinguish the payphone lights, rather than head out onto the sidewalk and risk being observed in close quarters by the black male. This would explain his reluctance to leave the payphone immediately and why he was still in it up to one minute after replacing the receiver. The fact he was still in the payphone after 10 seconds or more, rather than back at his vehicle and/or driving away, can be explained by the unwanted presence of an eyewitness "walking by" the payphone. An eyewitness he described in detail in his letter, who he later claimed he saw talking to police (probably by the payphone). When the PT&T operator rang the payphone back it briefly drew the attention of the black male to him and his car, irritating the Zodiac Killer and shaping his actions when he completed the payphone call to David Slaight from Napa after the Lake Berryessa attack.
WHEN THE BLACK MAN WAS WALKING BY [PT2]
WHEN THE BLACK MAN WAS WALKING BY [PT3]