TV Guide Investigation Discovery Friday

Killers brutally slay a trucker in bed and suspicion falls on his stepdaughter, but a darker truth emerges as police uncover a twisted plot.

A gunman executes three mechanics in a sleepy Connecticut town and detectives scrape for evidence and uncover a world of chatrooms and three potential suspects.

When a middle schooler vanishes without a trace, suspicion quickly falls on the new circle of older friends she's been spending time with.

When a young woman goes missing, a rookie police officer's intuition leads to an intense investigation, as they race against the clock to find her.

A reunited family begins to point fingers at each other when a house fire kills one of their own and somewhere in the ashes are the clues to a murder.

When a murder occurs in a quaint neighborhood in Jacksonville, Fla., investigators believe that this community's open-door policy be a little too open.

When Gina Coccia comes home and discovers the bodies of her girlfriend Patricia Lynn Steller and her nephew, the investigation reveals an act of betrayal.

Michelle Donohue claimed that her husband had left her, but when an informant told police the truth, they found evidence buried underneath a concrete slab.

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.

A vehicle mows down a 75-year-old military veteran on a country road in an apparent hit-and-run, but a young man confesses to the heinous crime.

A man finds his family slaughtered in their West Virginia home and his son is apparently missing, but it turns out he had been hiding with his girlfriend.

A mother and her daughter are murdered in their beds late at night and are discovered by the daughter's boyfriend, but detectives uncover his dark desire.

A woman's body is found strangled and partially nude off the side of a Connecticut country road, investigators apprehend a suspect in her murder.

An examination of some of the unique characteristics of female, psychopathic killers and exploring the horrific crimes that they've committed.

Hikers in Portland discover the decomposed body of a raped and strangled young girl, then a month later, another woman turns up similarly brutally murdered.

An unhinged man snaps and unleashes a furious rampage which would leave three women dead in their homes, then a statewide manhunt ensues.

Weeks after an 18-year-old man's friend reports him missing, his clothing turns up burned and in a trash can behind a suburban home.

When a young mother goes missing, her husband joins the search, but then the police discover her dismembered body in a stack of bins.

Sonja Holt suspects her fiancée, Stafford Shaw, is living a secret double life, she can't imagine how far he'll go to keep everyone from finding out the truth.

Dylan Eason's life sentence without parole doesn't appease his father, who admits wishing for his own son's death is horrible but feels he deserves it.

When Amy Chesler calls 911 to report what her brother, Jesse Winnick, has confessed to, she doesn't know whether or not to believe him.

When Rodney Metzer shows up to rescue his wife, Morgan from a violent encounter, it appears he is there to save her, but Morgan soon suspects he is no hero.

After 9 years of marriage, Terry Patzer can't explain how her former lover, Russell Tillis, became so twisted, but she was right to be afraid of him all along.

Andrea believes Ray Clark is the man of her dreams, but when she reveals she's pregnant, Ray becomes a nightmare and he stalks her & tortures their infant son.

Ron Youngblood meets Veronica, but instead it's a nightmare and when Ron tries to leave, she destroys everything he cherishes most in the world.

Mike Carroll sets out to find his long-lost father and what he uncovers along the way threatens to shake the very foundation of his family.

When Sara learns of her mother's murder, she slowly begins to realize who her father truly is, unearthing her family's dirty secrets along the way.

Mike Carroll sets out to find his long-lost father and what he uncovers along the way threatens to shake the very foundation of his family.

Sonja Holt suspects her fiancée, Stafford Shaw, is living a secret double life, she can't imagine how far he'll go to keep everyone from finding out the truth.

Dylan Eason's life sentence without parole doesn't appease his father, who admits wishing for his own son's death is horrible but feels he deserves it.

When Dr. Margo Prade is shot to death in a parking lot in 1997, the police are baffled until they discover her phone calls were being secretly recorded.

When Michelle Despinasse is shot inside her own home in Nanuet, N.Y., investigators discover she made a secret recording that reveals her killer's identity.