California highway patrol officer Lyndon Lafferty claims the certain top officials have known the identity of the Zodiac killer since 1971 and failed to take action due to a personal association.
Lafferty is one of four collaborators on the book titled "Zodiac Killer Cover Up: The Silenced Badge." He worked as a decoder during the Korean War and was assisted by a former police detective and a naval intelligence officer for the book.
"The true identity of the psychotic ZODIAC killer has been known by the Mandamus Seven since March 15, 1971. This true story is now being told for the very first time," the book's website states.
Mandamus refers to a group of retired law enforcement officials, federal agents, and district attorneys who Lafferty says have purposely covered up the identity of the Zodiac.
Lafferty alleges that "official corruption" and "political intervention" prevented the truth of the case from coming forwards, alternatively giving the Zodiac a "license to kill." He also charges that both the suspect and his wife were known personally by some of those in charge.
"This was a story that I inherited. I did not ask for it," Lafferty told ABC News. "I am the only person who can testify under oath that these things were absolutely true. My satisfaction is telling my story as it happened."
Lafferty attests that the Zodiac's killings were fueled by fury after he discovered that his wife was having an affair. Lafferty goes as far as to say that the publishing of his book was even hindered because of a judge who was having an affair with the suspect's wife, according to ABC.
"The police departments in general were acting under the authority of the Solona County Sheriff, so they were instructed you do not investigate this man until you have permission from the judge," Lafferty told ABC. "It's been very traumatic, and it's been frustrating beyond belief."