Diabolical Episode Rating Graph

In Prichard, AL, loving father Re'Mano Campbell is found murdered in his home; it takes the cunning wit of local investigators to unravel the mystery of who murdered him.

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.

When Samuel Johnson Jr. suddenly vanishes, investigators find themselves face-to-face with two sisters who know something; through a series of interrogations, they reveal an elaborate murder plot meticulously engineered by a puppeteer.

In 2017, Federal Heights, CO, is filled with fear when 69-year-old veteran Bill Mussack is reported missing, gone without a trace; police act fast to uncover a diabolical killer with a heinous plot before the malicious murderer strikes again.

Three men die over a span of a dozen years, with no suspicion of wrongdoing and no files charged. But when a deadly car explosion rips through downtown Pensacola, FL, a new investigation begins; all suspicion points toward just one person.

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.

In West Bloomfield, MI, a simple affair between two coworkers turns complex as the two lovers are willing to do anything, even commit murder, to protect their darkest secret.

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.

A cold morning in December starts off like any other, then a farmer finds the body of a dead woman; what seems like a rape and murder case turns into a conspiracy, and someone's diabolical nature is soon revealed.

In 2015, Detective Scott Sanderson finds himself investigating one of the strangest cases of his career, involving a missing woman and her newborn; before long, he uncovers a diabolical scheme that will destroy the lives of everyone it touches.

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.

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.

Gina Coccia comes home from work to discover the bodies of her girlfriend, Lynn, and Lynn's nephew, Ronnie, shot and stabbed on the kitchen floor; the investigation leads police to a terrifying act of betrayal.

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.

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.

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.