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In a rich California suburb, popular cheerleader Kirsten Costas is stabbed to death. A teenage girl is seen fleeing the scene - does someone know the killer.

The murders of two teenagers devastates their communities. Everyone is desperate for answers, who would kill the two young victims.

A newly engaged woman is discovered dead on New Year's Day. Investigators brush her death off as suicide, but her family are convinced foul play is involved.

When a farmer comes across a car with a dead woman inside it, police believe it is a sick sex crime. But, investigators reveal a sinister and evil truth.

On June 6, 1992, Suzie Streeter and Stacy McCall are out celebrating high school graduation. By morning, the teens are missing, along with Suzie's mother.

When two young adults are found dead weeks apart police are stumped. Disturbing text messages and contradictory statements suggest they were murdered.

Two young women who dream of big success as television anchors are just embarking on their careers when their plans come to a violent end. What happened to them.

Entrepreneur Chris Smith moved to Southern California with dreams of sand and success. After making a fortune, he decides to travel the world, but he never returns home.

When the body of loving father, Re'Mano Campbell, is found slain in his house in Prichard, AL, local investigators unravel a disturbing web of lies.

The baffling murder of a beautiful young woman leads police to zero in on two potential suspects - her new boyfriend and an obsessed stalker.

The search for the man who murdered a single mother might lead police to the perpetrator of a second brutal crime with chilling similarities.

Experts analyse the former Prime Minister's colourful past and complicated relationship with the truth. Was his career littered with lies.

Online dream. Real life nightmare. Experts in body language, linguistics, and psychology study police bodycam, spotting the signs that point to the murder of Gabby Petito.

A killer leaves a college student dead in an infamous LA tunnel linked to the Manson murders, sparking rumours of occult connections.

Katrina and Jack visit a mansion in Denver rumoured to be beset by scandal, death and ghosts. But, their client is sceptical that it is paranormal activity.