Journalists Express Doubts About "Zodiac Killer" May 10, 2015 18:42:19 GMT -6 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Admin Horan on May 10, 2015 18:42:19 GMT -6 In October, 1969, several journalists, including the Chronicle's Paul Avery, were questioning the authenticity of the "Zodiac" and his letters.