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- Wednesday 8:00 PM et/pt on Investigation Discovery
- 3 Seasons, 31 Episodes
- December 18, 2013
- Mystery
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/10 - Cast: Anthony Belfiore
TV Shows
Watch Full Episodes of Diabolical
Diabolical Full Episode Guide
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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.
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Three women die of the same mysterious illness, the hunt is on to prove their deaths are no accident. Investigators don't know that they are being played for fools by a sinister killer lurking undetected. There's only one woman who can bring him down.
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In West Bloomfield, Mich., 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.
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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, Fla., a new investigation begins; all suspicion points toward just one person.
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A man from Las Vegas was pointed as the person behind the murder of a father, but it's more than just a simple case.
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In 1994, Lake Orion, Michigan is rocked by a vicious murder. At first, the crime is a mystery. But in a small town where everyone knows each other, rumors start flying. Soon, police expose a strange and twisted plot that no one saw coming.
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Air Force veteran Michael Giles disappears along with his savings of $206,000 and detectives discover a woman named Kwaneta Harris has been draining the man's accounts. But, as they dig deeper, detectives uncover a massive conspiracy of greed and murder.
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In 1980, two eerily similar crimes occur 400 miles apart. They both leave young mother dead and an infant child stolen. Years later, police unravel a plot so cold-blooded, it leaves everyone even seasoned homicide detectives in utter shock.
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Federal Heights is filled with fear when a 69-year-old veteran is reported missing without a trace. Police act fast to uncover a diabolical killer with a heinous plot before they can strike again.
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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.
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After Cynthia Roth drowns in the middle of a crowded lake, investigators uncover a decades-long trail of terror; detectives must take extraordinary measures to catch the killer.
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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.
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Penny Knell is admitted to a special care facility, where a devious mastermind is waiting to prey on vulnerable people; when Penny's family gets ensnared in her web, the consequences will be fatal.
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Donna Scrivo alerts the local police, but days pass with no sign of her son anywhere. Then a grisly discovery of a severed human head and body parts along a rural highway reveals an act of shocking violence.
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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.
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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.
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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.
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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.
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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.
