The brand new true-crime documentary The Serial Killer's Apprentice premieres on Investigation Discovery Sunday, Aug. 17 at 9/8c.
The documentary follows Dr. Katherine Ramsland, an American non-fiction author and professor of forensic psychology and criminal justice at Desales University, as she tackles the monumental task of interviewing Elmer Wayne Henley.
Where to watch The Serial Killer's Apprentice
Cord cutters hoping to catch the gripping true-crime documentary can watch the premiere even without access to cable by signing up for a subscription through Philo, DirecTV or Sling.
Out of the three streaming platforms that offer Investigation Discovery, Philo is the cheapest option at just $28 a month after its free trial concludes.
Philo is considered one of the most affordable traditional cable alternatives out there. At just $28 a month after a 7-day free trial, subscribers can enjoy over 70 top-rated TV channels such as TLC, MTV, BET, AMC, CMT, Investigation Discovery and more.
DirecTV is one of the leading streaming platforms taking the industry by storm. With plans starting at $86.99 after its 5-day free trial, DirecTV offers a plethora of live TV channels, tailor-made genre packs to slim down filler overload, and a load of other appealing features.
Sling is another great streaming platform replacing basic cable. By offering users a stellar selection of popular TV channels, Sling is a great alternative to the hassle of traditional cable. Sling is also introducing day, week and weekend passes which allow users to choose how long they can access the platform. Plans start at just $45.99 a month after the first month and the new passes start at $4.99.
More on The Serial Killer's Apprentice
Over the course of the two-hour documentary, Dr. Ramsland holds a conversation with Henley and dives into his mind and memory to discover what motivated him to act as an apprentice to the infamous Houston serial killer, Dean Corll; Henley assisted Corll as an accomplice in what was known as the largest mass murder in U.S. history at the time.
In addition to the revealing conversation Dr. Ramsland has with Henley, the renowned criminologist will also study Henley's journey from groomed teen to killer in the 1973 Houston Mass Murders.
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