The Serial Killer's Apprentice is currently streaming on HBO Max and Discovery+

Name: The Serial Killer's Apprentice
Genre: Crime, Documentary
Released: 2025
Duration: 87 min
Cast: Katherine Ramsland, Wayne Henley

The Serial Killer's Apprentice (2025)87 minCrime, DocumentaryRating 54/100

Dr. Ramsland shares an exclusive interview with Elmer Wayne Henley, studying his journey from groomed teen to killer in the 1973 Houston Mass Murders.