The Serial Killer's Apprentice

The Serial Killer's Apprentice (2025)

Documentary Crime

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.

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  • Release Date: 2025-08-17
  • Runtime: 1h 36min

Where to Watch The Serial Killer's Apprentice Online

You can now watch The Serial Killer's Apprentice online on the following streaming services in the United States.

    • Cast

    • Katherine Ramsland

      Self

    • Elmer Wayne Henley

      Self