History's Greatest Mysteries S4E2 · Who is the Zodiac Killer?

History's Greatest Mysteries

Season 4 · Episode 2 · Who is the Zodiac Killer? · 42 min

In 1969, one of history's most elusive serial killers terrorizes Northern California. He taunts investigators with cryptic ciphers and clues, leaving police and the public questioning his identity for over 50 years. Can new evidence and technology finally crack his code? Who is the Zodiac Killer?