BREAKING NEWS: Zodiac Killer identified? Exclusively on Diamond State: Murder Board this week we reveal new evidence and details gleened by a journalist who may have deciphered the coded messages left by America's most elusive serial killer. It's been five decades since he terrorized northern California and his lone missing victim may have been located. Join us as Jennifer Bucholtz gives an in-depth look into the new minute by minute developments in the FBI's most notorious unsolved case.