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 New Suspect
Season 1 • Episode 1
The Military Connection
Season 1 • Episode 2
A New Code Uncovered
Season 1 • Episode 3
The Secret FBI Files
Season 1 • Episode 4
The Code is Cracked
Season 1 • Episode 5
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