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.
Where to Watch
Trying to watch this from United States?
Some content may not be available in your region. Use a VPN to access streaming services from anywhere.
Unlock with NordVPNAffiliate link • We may earn a commission at no extra cost to you
Seasons & Episodes
1. Mistress Roulette
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.
2. Lying For Love
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.
3. 'Til Death Do We Part
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.
4. Who Lies Beneath
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.
5. Best Of Friends
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.
6. Mother Of All Murders
Janet Lynn Mickey dreams of starting her own family and marries college football star Darrell Tyburski; plans change after the young couple begins having children, leading them down a very dark path.
7. Family Or Foe
A young family is on an evening stroll when suddenly terror strikes. Nothing seems to add up during the investigation, it is not clear if it is random violence or a mastermind at work and the truth will take years to emerge.
8. Accident Waiting To Happen
Single mom Rainey Morin thinks she has found her one and only soulmate in Robert Kowalski. However, beneath his bright veneer is a dark history threatening to wreak havoc upon her life and those around her.
9. Weeping Widow
After losing her husband in a tragic accident, a God-fearing Cindy McKay claims she has to bend the law to pay off his illicit debts; authorities soon realize that Mckay is a criminal mastermind.
10. Living Off The Dead
George Kalomeris is a family man who looks after the less fortunate in his community, then a dying man fingers Kalomeris as the shooter, and police discover a monster more diabolical than anyone could ever imagine possible.