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E1 Body Count: The Green River Killer
The unsolved murders of women around Green River near Seattle haunt investigators for decades — until crime scene science finally catches up.
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E2 Manhunter: Aileen Wuornos
A serial killer’s deadly road trip through Florida in 1990 leaves several men dead and spurs investigators to go undercover for an unexpected suspect.
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E3 True Lies (1): The Happy Face Killer
Odd suspects, questionable confessions and ever-shifting stories confuse detectives in the hunt for a young Oregon woman's killer in the early 1990s.
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E4 True Lies (2): The Happy Face Killer
A consequential letter surfaces with stirring claims and upends the seemingly closed case, calling into question the guilt of the convicted criminals.