MysteryQuest S01E03 - San Francisco Slaughter

A series of unsolved murders. A cryptic set of clues. A dead end at every corner. The serial killer known as the Zodiac long terrorized the residents of the San Francisco Bay area while taunting police. He was never caught. Now our team of investigators have identified a new suspect, and with the aid of a groundbreaking new DNA technology have the chance to come one step closer to finally solving the mystery of this murderous crime spree.