Episode 23 - This Is the Zodiac Speaking

During the late 60s and early 70s, the city of San Francisco and surrounding areas saw a rash of killings that was claimed to be the work of a masked monster known as the Zodiac. For years, police tried desperately to catch a serial killer hell bent on leading them on a cat and mouse chase. Though thousands were suspected, no one was ever caught. Who was the Zodiac Killer? Listen this week as the guys do their best to figure out one of America's biggest unsolved mysteries.