49-year old Neal Jacobson is the image of success. Then one morning Neal is found covered in blood by a Florida roadside, claiming that he just killed his entire family. Is Neal Jacobson the victim or is he simply a cold-blooded killer?

Unhappy Birthday

When Christine Billis' car veers off the road and rams into a tree, her husband, Charles Billis, dies at the scene. Was Charles Billis' death a tragic accident or is his death the result of a diabolically premeditated plan?

Our Little Secret

David Messenger brutally murders his pregnant wife, Heather, in front of their 5-year-old son. The crime comes as a shock. Did he kill his wife in self-defense, did he fall victim to mental illness or was something even more disturbing going on?

Shattered

Pennsylvania native Janet Lynn Mickey's greatest dream is to start her own family. So, when she marries college football-star Darrell Tyburski her future seems secure. But when the couple has children, plans change leading them down the darkest path.

Mother of all Murders

In 2015, Detective Scott Sanderson finds himself solving one of the strangest cases of his career. At its center are a newborn and her missing mother. Before long he'll uncover a diabolical scheme that will destroy the lives of everyone it touches.

Mother of All Lies

A cold morning in December starts off like any other until a rural farmer discovers the body of a dead woman. What seems like a sadistic rape and murder turns into a conspiracy and before long the diabolical nature of someone close is revealed.

Who Needs Enemies

On April 17, 2015, a Virginia hunter stumbles upon a grisly discovery in the woods: a woman with an execution style gun shot wound to the back of her head. As detectives begin their investigation, they uncover a twisted web of lies and crimes.

Someone's Lying

A woman comes home the morning after Halloween and finds her roommate and her roommate's nephew laying dead on the floor of her house. Who could have committed such a heinous act!?

Recording Evil

2011 is off to a rocky start when a beloved Susanville police officer is found dead. What first looks like suicide morphs into a full blown murder investigation when his wife becomes a suspect and detectives uncover a story of love, lust and murder.

Queen of Deception

DeEllen Bellah and Don Dial

Penny Knell is admitted to a special care facility where a devious criminal mastermind awaits.

The Rich Get Richer

In Prichard, Ala., 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.

A Life of Lies

Cynthia Roth drowns in the middle of a crowded lake. A decades-long trail of terror is uncovered by investigators. Detectives must take extraordinary measures to catch the killer.

Murder is No Accident

After her home is invaded and her husband murdered, Shaunna Dodd recounts her harrowing ordeal at gunpoint. However, when investigators dig deeper, they uncover a tale of lies, infidelity, and shady characters who have wandered into the Washoe Valley.

When All Else Fails

Episode 11

Calculating. Cunning. Cold as ice. These shockingly devious masterminds use their wits and wiles to manipulate, seduce and try to get away with murder.

All Episodes of Diabolical

Season 1

Unhappy Birthday

Season 1 Episode 1 - Aired 12/18/2013

Our Little Secret

Season 1 Episode 2 - Aired 12/18/2013

Shattered

Season 1 Episode 3 - Aired 12/18/2013

Mother of all Murders

Season 1 Episode 6 - Aired 12/25/2013