A broken down car leads to one of the most agonizing US murder cases ever.

A leafy suburb erupts in a hail of gunfire that leaves one couple dead.

A young mother's tragic murder reveals a twisted web of lies and deceit.

A teen girl vanishes, and her mother believes she is a victim of foul play.

A tragic find along a riverbank seems connected to a witness at the scene.

A vibrant 13-year-old walks her dog right into the middle of a nightmare.

A 12-year-old girl storms out of her house following a fight and vanishes.

It takes only three minutes for a lifeguard's future to be forever changed.

For Crystal, Hurricane Harvey wasn't the worst tragedy of August 2017.

A woman's joyous solo vacation ends with a deadly betrayal.

Police try to solve the disappearance of two friends and one of their moms.

A family fears for entrepreneur Chris Smith when his emails suddenly stop.

Police look for 10-year-old Kevin Collins, who disappeared on his way home.

From 1971 to 1972, a killer abducts and murders girls in Washington, DC.

Police untangle a web of politics and gangs behind Dr. Haing Ngor's murder.

Investigators look for NBA star Lorenzen Wright's killer for seven years.