Movie · 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.

2025 · 1h 28m

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The Serial Killer's Apprentice

Documentary

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.

Information

Studio
Discovery Global Crimes
Released
2025
Run Time
1 hr 28 min
Rated
TV-14

Languages

Subtitles

English (United States) (SDH)

Accessibility

Audio descriptions (AD) refer to a narration track describing what is happening on screen, to provide context for those who are blind or have low vision.