Robert’s second book, Zodiac Unmasked: The Identity of America's Most Elusive Serial Killer, was published in 2002. Both books alleged that Arthur Leigh Allen, who died in 1992, was the Zodiac ...

He entered the police academy after his military service ... Robert Graysmith — who wrote two books on the case, “Zodiac” and “Zodiac Unmasked,” which were the basis for the 2007 movie ...

Many have claimed to know the identity of the notorious Zodiac Killer ... elusive killer who wrote letters bragging about his conquests? Gary Stewart says it was Earl Van Best, Jr., his biological ...