
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.
- Created By
- First Aired on
Jan 01, 2018
- Popularity: 6.6466
- 1 votes
- Networks
- (US)
- Production
Lion Television (GB)MPH Entertainment Productions
- Status: Returning Series
In Production
3 seaons till May 12, 2020
Last episode: Evil Sister Act
Seasons & episodes
Total 3 seasons, 30 episodes

Season 1
Aired
Episode 1Mistress Roulette42 min
Married family man Dr. Adam Frasch has a booming practice, and he loves to spend money on houses, automobiles and exotic dancers; ultimately, the doctor will reap what he sows in deceit and jealousy.
Episode 2Lying For Love42 min
Temptress Cathy Cousin moves in next door to devoted family man Tim Koile, wrapping him around her finger and convincing him to satisfy her every whim no matter how diabolical.
Episode 3'Til Death Do We Part42 min
Lyle and Carol Kopenskey are high school sweethearts who marry after graduation; after 40 years of marriage, one of them becomes involved in an extra-marital affair that leads to cold-blooded murder.
Episode 4Who Lies Beneath42 min
Valuing wealth more than love, Michelle Donohue casts aside good men before meeting Mr. Right who gives her a taste of her own medicine and sends her down a murderous path.
Episode 5Best Of Friends42 min
After sneaking out to attend a party, 19-year-old Jose Najera returns home to find both of his parents dead in their bedroom. It is unclear if it is a random killing or a botched robbery.
Top Cast
Crew & Team

Art Direction