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Two tight-knit sisters fall out over an inheritance from their mother. Years later, one of the sisters dies a painful and mysterious death.

Sisters Janice and Betty plot a murder and its cover-up. Their plan has a fatal flaw, however, as they leave the victim lying by the side of the road.

Family, friends and investigators recount the most provocative crimes ever committed by the unlikeliest of pairs: sisters. How and why do they descend into darkness.

Two sisters with little in common cope with their overly protective mother in very different ways and, in the end, with very deadly consequences.

In Mississippi, a tight-knit family is torn apart when an affair is uncovered. Two people are killed and secrets revealed during the hunt for the killer.

In 1970s Detroit, a murder rocks an African-American neighbourhood. Police think they've got the killers - but it will take 47 years for the truth to emerge.

In 1992, a college student disappears after her car breaks down on the highway. Police are stumped when her body is found 500 miles from where she vanished.

On Monday, January 28th, 1996, the morning after Super Bowl, a campus worker at Tustin High School, California discovers a bloody corpse on the tennis court.

The Curious Case of the Persian Violet. In 2004, 27-year-old Jarrod Davidson is shot dead outside his apartment. Next to him is a suspicious potted plant. Who killed him.

An oil executive goes missing in front of his New Jersey home. Police fear a medical emergency until a ransom note arrives from an eco-terrorist organization.

Washington Redskins star Sean Taylor is shot dead by an intruder in his Miami home. And when it comes to the rich and famous, it seems like everybody has a motive.

The murder of 10-year-olds Holly Wells and Jessica Chapman in 2002 shocked the UK. Experts study media interviews of their killer, Ian Huntley, to expose his lies.

What exposed Tracie Andrews' lie that a road rage attack killed her lover? Mike Gifford-Hull's TV plea for his missing wife Farsi hides the truth.

Single mother Donna Willard is murdered at home. The hunt for her killer leads to a series of dead ends until the case breaks in an astonishing direction.

Will a trail of blood from the balcony of a young woman's apartment to the complex's parking lot lead police to her cold and calculating killer.

The abduction and murder of a beloved teacher haunt the residents of a New England town for decades, until her killer emerges from the shadows.