A scorned, abusive lover hunts the Dallas suburbs for his ex. When he can't find her, he unleashes his revenge on residents.

A husband finds his wife brutally slain and calls 911. Does he know more than he lets on? CCTV exposes secrecy and lies.

Detectives investigate the death of a teenager with special needs in New York. Body cam video and original audio capture detectives' hunt for what happened.

When a hardworking trucker is shot dead in his truck, detectives are left with few clues to find his killer. Two years later, a confession cracks the case.

A salon owner is murdered in her upscale Chicago apartment. As neighbours gossip about the identity of the killer, detectives try solve this shocking mystery.

The untimely death of a mother shocks a small Indiana town. But revelations of foul play at her funeral sparks local gossip and a break in the investigation.

The Barnetts' adoption of an allegedly six-year-old Ukrainian orphan turns into a nightmare when they learn she may not be six, or Ukrainian.

Michael Barnett claims Natalia tried to poison them. But inconsistencies in his story leads investigators to question who the real villain is.

Louisiana Melton and her boyfriend Phillip Brown are shot dead. Police have little evidence, a lot of suspects and a shocking lie in the way of uncovering the truth.

In 1996, the owner of a successful business takes a trip to meet a mystery woman. But, when he goes missing, police believe something sinister has happened.

When a hardworking trucker is shot dead in his truck, detectives are left with few clues to find his killer. Two years later, a confession cracks the case.

When a woman's millionaire boyfriend reports her missing, police have little to go on in their search. An unlikely witness appears, uncovering a web of deceit.

CSI Alina Burroughs travels to Austin, Texas, to investigate the 1988 murder of 20-year-old, Nancy DePriest. She was found shot in the head at her job.

CSI Alina Burroughs travels to the Colorado mountains to investigate the 1995 shooting death of Bruce Dodson, killed while hunting deer.

Robert Champion suddenly dies in the back of the marching band bus. An autopsy points to foul play, exposing a dirty secret inside the premiere marching band.

The shooting of a football coach inside a high school triggers a lockdown in the middle of a school day. Police race to track down an active shooter.

Roo works to take down a menacing pilot interested in a 15-year-old decoy. And the team struggles to find the identity of another predator.

Roo and Shelby stake out a predator's hotel to take him down. The team is shocked when they learn details of the identity of "The Gray Man".

Before single mom Lori Leonard settles into her upstate New York home, she vanishes without a trace and detectives don't know if she's dead or alive.

Danielle Davis is found dead in her college apartment, strangled with the cord from her laptop. Police know they'd better be quick to find this co-ed's killer.

When a 69-year-old man goes missing in Kalamazoo, Michigan, neighbours seem to be hiding information from police. What happened to him?

Natalia tries to fill the missing pieces of her life by learning the truth about her age. Shocking new information exposes the lies.

In an explosive confrontation, Natalia demands answers from Michael about their reasons for adopting her. Law enforcement officials speak out.

A husband finds his wife brutally slain and calls 911. Does he know more than he lets on? CCTV exposes secrecy and lies.