In Nebraska, a group of teens venture into the adult world of 'partner swapping', only to find they are flirting with disaster when one of them ends up dead.

In the competitive world of Dallas high school basketball, someone kills rising star Troy Causey, sending detectives in search of answers.

Tempers flare outside a home where Savannah police officers have uncovered three dead bodies. One argument could offer a vital lead in this horrifying case.

When a tip from a missing persons' network helps identify the body of a John Doe murder victim, investigators' questioning unravels a dark tale of betrayal.

A 26-year-old is found dead inside her home and it is declared a suicide, but a determined investigator looks further when friends of the victim come forward.

When attorney James DiMartino is shot in the head in broad daylight, the suspects range from his lover, to his wife, to his business partner.

A single mother is found dead at home by her best friend. Detectives then embark on a wild chase involving dangerous and surprising characters.

An interior designer loves meeting people on the internet. When he's found dead, police believe one of the online strangers might be the person who killed him.

What seems a simple accident becomes a murder case when 32-year old Mike Mueller's car is found across state lines. Will the car offer police the crucial clue?

The Arlington murder of Sharyn Kills Back remained a mystery for more than 20 years. Then, a surprise tip to Fort Worth Police promises to crack the cold case.

When a tip from a missing persons' network helps identify the body of a John Doe murder victim, investigators' questioning unravels a dark tale of betrayal.

In North Port, Florida, police get a call that a young mother has vanished from her home. A trail of incoming 911 calls leads officers on a hunt for her abductor.

When two women die suddenly under mysterious circumstances, authorities initially suspect suicide. However, both of their families believe it was murder.

A 22-year-old National Guard officer with a bright future drowns in water only a few inches deep. Later, a 13-year-old cheerleader disappears.

A month after 17-year-old Kara goes missing, Kelsey is abducted in a car park. When a body is discovered by a lake, two families are locked in a grim waiting game.

Niqui goes missing three weeks before her wedding day. Suspicion falls on her fiancé, until her case is linked with the unsolved murder of another young woman.

Thirty years on, Sharon Morris still wonders why former boyfriend and multiple murderer Anthony Fiebiger didn't kill her when he had the chance.

Jeanne Avsenew and her son Peter were close, but as Peter matured, his obsession with death grew. Then one day Jeanne finds a bullet with her name on it.

When two teenage girls discover they are dating the same boy, they go to war with each other on social media and in real life, with tragic consequences.

A shooting in a luxury building sends shockwaves through an upscale neighbourhood. Detectives uncover a list of suspects and a plot born out of economic envy.

Robert Sharp is a retired professor living in Michigan. When he is found brutally murdered with the body burned, police wonder who could be responsible.

When motorists discover the bodies of a man and woman along I-85, detectives uncover a psychopath with a penchant for guns and violent fantasies.

When a young woman vanishes, investigators quickly zero in on her estranged husband and uncover a psychopath who cannot tolerate rejection.

In the competitive world of Dallas high school basketball, someone kills rising star Troy Causey, sending detectives in search of answers.

While on a walk, a North Carolina teen vanishes, and as the search unfolds, her friends' shifting stories raise troubling questions.