Perfect on the outside, mental on the inside. Even the most kind-hearted people have a dark side looming. Diabolical looks at the minds of murderers with the question: "why did they do it?" Take a trip through the picture-perfect life and see the events that lead to a brutal murder. The tension builds throughout each episode as you dive deeper into the psychological workings of the murderer. With key insights from forensic psychologists and psychiatrists along with criminal profilers, a full analysis of the behavioral underpinnings and key moments in each crime will be on display. Diabolical shows how much people can conceal, until they blow.

Show Info

Network: United States Investigation Discovery (2013 - now)
Schedule: Wednesdays at 20:00 (60 min)
Status: Running
Show Type: Documentary
Genres: Crime

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Previous Episode

One Mistress More

Episode 2x11; May 17, 2018

This doctor has a dangerous secret: He has an insatiable appetite for women. He collects them like he does exotic cars, but unlike the cars, he stashes them in his various properties, hiding them from one another, and especially his wife.

Previous Episodes

Episode NameAirdateTrailer
2x11: One Mistress MoreMay 17, 2018
2x10: Living Off the DeadMay 10, 2018
2x09: Weeping WidowMay 3, 2018
View full episode list »