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Synopsis
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. 
Original title The Serial Killer's Apprentice
IMDb Rating 6.3 273 votes
TMDb Rating 6.4 7 votes
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