The Serial Killer's Apprentice 2025
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Dr. Katherine Ramsland interviews Elmer Wayne Henley, the sole survivor of the 1973 Houston Mass Murders, to unravel his chilling journey from manipulated teen to convicted killer — and the terrifying truth behind the line between victim and predator.
- Released: 2025-08-17
- Runtime: 0 minutes
- Genre: Documentary, Crime
- Stars: Katherine Ramsland, Elmer Wayne Henley
- Director: Dick Wolf
