The Serial Killer's Apprentice poster

Movie

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.

Where to watch The Serial Killer's Apprentice

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Trailer

Play: The Serial Killer's Apprentice | Official Trailer | True Crime Documentary | MAX | ID

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Cast

  • Katherine Ramsland Self
  • Wayne Henley Wayne Henley Self (voice)

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