The Exorcist Letter mailed to the San Francisco Chronicle on January 29th 1974 was closely followed just five days later by the SLA Letter, postmarked February 3rd 1974 from Los Angeles. Both letters seemed to offer very little in the way of clues.
Kevin Robert Brooks steps into the mind of the Zodiac Killer, believing he is slowly drawing his suspect out of the shadows and into the light, as one and the same. On the face of it, little seems to stand out in these two short messages, until you compare these two letters alongside articles sent by Donald Lee Bujok to the Billings Gazette in the 1970s. In a previous article it was shown that Donald Lee Bujok had mailed numerous literary observations on various social issues of the day to the newspapers, giving us a tantalizing glimpse into the psyche of what drove him, and possibly indicated that the author was luring us into a game of 'cat and mouse', thereby toying with authorities to see if they could connect the dots between the Billings Gazette articles and the Zodiac communications that had streamed from the pen of a killer for nearly half a decade.
The Zodiac presented us with symbols at the foot of the Exorcist Letter, thought to be the words 'To Kill', as Kevin Robert Brooks surmised this was the most reasonable assumption based on what we know about the killer. He then, as a form of prompt to the police, mailed us the SLA Letter just five days later - and in trademark Zodiac style, continued his art of toying with authorities by stating
In the article he placed two interesting features that spiked interest. Firstly, he mentioned "Mr Kolchak", the lead character from the television series Kolchak the Night Stalker. The first episode of which, is about a serial killer who writes to newspapers, entitled "The Ripper" and aired by ABC television on September 13th 1974.
The storyline is about a murderer who preys on women in Chicago, with Carl Kolchak played by Darren McGavin, strong in his belief that this was not a copycat, but actually Jack the Ripper himself, a ruthless killer who slaughtered five women in the Whitechapel district of London, England in 1888. He was an intimidating and fast talking character, strong willed with a dark sense of humor, who worked as investigative newspaper journalist for Chicago's Independent News Service and going to any lengths to nail down a story. A rival reporter, Jane Plumb, who was also pursuing the story after receiving correspondence from the killer, felt she could arrange a meeting with 'The Ripper' for an exclusive.