The main suspect, Arthur Leigh Allen, was cleared after DNA evidence taken from the saliva of the Zodiac’s sealed letters exonerated him.
Mr Lafferty, who went to High School with Mr Allen, claims that the identity of the Zodiac killer has been known since March 15, 1971.
The ‘Mandamus Seven,’ a group of retired law enforcement officers, federal agents, a minister and a District Attorney banded together to prove, once and for all, who the Zodiac really is.
The motive for the killings, Mr Lafferty says, was adultery.
‘Mind and body ravaged by years of severe alcoholism, his blood-lusting revenge turned him into the most shocking and vicious killer in our 20th century,’ Mr Lafferty writes.
‘Through his tauntings of the police, his codes, ciphers, and letters, he was on a mission to redeem his shattered ego, to prove that he is better, smarter, and more clever than all the judges and police put together.’
Mr Lafferty says that the Zodiac started his killing spree after his wife had an affair with a Solano County Superior Court Judge…
Along with the “Home” episode of The X-Files, the recreation below, beginning 8:50, is one of the only things I’ve ever seen on TV that has genuinely scared me: