Ken Mains

A look at the hunt for California's Zodiac Killer, who murdered at least five people in the San Francisco Bay Area in the late 1960s and early '70s.

The story of convicted killer Joseph Naso, and how a fellow inmate came to connect him to many additional cold cases, with the help of Investigators.

A look at the hunt for California's Zodiac Killer, who murdered at least five people in the San Francisco Bay Area in the late 1960s and early '70s.