A California preschool faces spurious charges of child sexual assault.

The disappearance of an escort leads police to discover 10 other victims.

Investigators uncover multiple suspects as they race to capture a killer.

A baby girl goes missing and her family is accused by the police.

An encounter with a prowler leads the police to a budding serial killer.

New evidence may be the key to solving a 1981 murder of four people.

In 2012, hikers discover the severed head of a retired flight clerk.

A game of truth-or-dare leads to a startling confession of murder.

Police investigate the murder of six-year-old beauty-queen JonBenet Ramsey.

A lone survivor helps the police track down a serial killer.

The town of Craig, Alaska, is shocked when a charred body is discovered.

Authorities doubt the story of the lone survivor of a brutal home invasion.

Caylee Anthony's grandparents detail their granddaughter's disappearance.

Casey Anthony's lawyer presents shocking claims about her father, George.

Casey Anthony's defense focuses on challenging the forensic evidence.

New crime scene footage gives a chilling glimpse inside the JonBenet case.