The Hunt for the Zodiac Killer

Season 1, Episode 4: The Secret FBI Files

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The hunt goes into high-gear as the FBI releases secret files on the mysterious Zodiac Killer, and a handwriting analyst connects the Zodiac’s letters to a taunting letter mailed 3,000 miles away in Albany, NY. The code team has a massive breakthrough on the Z-340.

All Episodes - Season 1

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