

Web series
Diabolical
Like trying to decipher the value of a book without ever opening it, judging a person by his or her outward appearance can be a mistake. Someone may look perfect on the outside, but even the most kind-hearted soul has a dark side looming. "Diabolical" is a docuseries that delves into the minds of murderers, asking a simple question: "Why did they do it?" The acts were committed with extreme premeditation -- many were months or even years in the making. Tension builds in each episode as law enforcement taps into the methods of devious masterminds, aided by insights from forensic psychologists and psychiatrists as well as criminal profilers.
- Status
- Returning Series
- Type
- Documentary
- Last aired
- 2020-05-12
- Language
- English
Investigation Discovery
- homicide
- murder
Seasons
Top billed cast
Behind the camera
Director
Produced in
Canada, United States of America
Where to watch
Availability for United States. Provided by JustWatch through the TMDB API.
Stream
HBO Max Amazon Channel
Philo
Discovery+ Amazon Channel
YouTube TV
Investigation Discovery
HBO MaxWatch now
Discovery +
Buy
Amazon VideoBuy
Apple TV Store
Google Play MoviesBuy
Fandango At Home
Gallery


Videos
No extra videos are listed for this title yet.
Air dates
- First aired
- 2018-01-01
- Latest episode
- 2020-05-12
- Status
- Returning Series
- Next release
- In production
- Season 11 Jan 2018
- Season 221 May 2019
- Season 310 Mar 2020
Frequently asked questions
Diabolical is streaming on HBO Max Amazon Channel, Philo, Discovery+ Amazon Channel, YouTube TV, Investigation Discovery in India. Use the official Watch now links in the Where to watch section above.
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