When investigators respond to a bloody quadruple homicide, they soon discover the murders involved torture, revenge, and even Satan.

Noah Kinney is shot dead in a car in Akron, Ohio. Detectives race to find an armed killer on the loose and discover video evidence that cracks the case wide open.

When former homecoming queen, Melinda Snyder, is killed, her home-town is embroiled in a mystery that wouldn't be settled for a long time.

A car is set on fire near a beach and detectives quickly find the body of a young woman. But, the killer's attempt to hide evidence leads police straight to them.

The abduction and murder of a young schoolteacher shocks a New England town. Veteran investigator Robert Cushing is appalled by the depravity of the killer's plan.

When three synagogues simultaneously go up in flames, agents work relentlessly to solve the arsons. What they discover is a sinister plot of bigotry, fire and fury.

Codi Joyce died at a house party after a fight in 2015 and nobody was ever charged for his murder. What really happened that night and why will no witnesses talk?

A young mother is found brutally murdered in her home in New York. Snowy footprints lead into the home but with no exit trail, how did the killer escape?

When police discover Betty Sue Short murdered in her home, they notice disturbing similarities with another recent killing in the community of Kingsport, Tennessee.

When former homecoming queen, Melinda Snyder, is killed, her home-town is embroiled in a mystery that wouldn't be settled for a long time.

Lance Herndon was living the American dream, until he was brutally murdered. Behind the gates of his upscale community, investigators find a twisted web.

In New Mexico, police chase a shooter who guns down an unarmed man. In Florida, police close in on an armed robber from the ground and air.

Surveillance video catches three gunmen shooting in an affluent Florida neighbourhood. In Oklahoma, police discover a killer waiting in the shadows on CCTV.

At the Dorohusk border, a sniffer dog spoils a couple's birthday celebrations. Plus, customs officers search a vintage motorcycle for hidden contraband.

In Korczowa, customs officers uncover mysterious packets inside a car's fake fuel tank. Plus, a sniffer dog is deployed to search a well-known smuggler's van.

When a ranch hand is found dead in a river outside of Salt Lake City, investigators across two states must work together to catch the killer.

Fishermen find a 27-year-old man shot to death on a river embankment. A jailhouse call leads investigators to a twisted love triangle that ended in murder.

When mother Samantha McNorton vanishes without a trace, Ranger Holland steps in and launches a whirlwind investigation, determined to find her.

In 2017, an Ohio couple finds a dismembered body in a basement freezer. It unlocks a harrowing mystery surrounding a missing woman and a tragic love triangle.

A 911 call leads police to find Ron Whiles shot and burned in his home in Lafayette, Indiana. Police questioning leads them to one name.

A woman raised in a strict religious community uncovers the truth about her first love and battles church members determined to silence her.

A massacre in Gitchie Manitou State Preserve leaves four teenagers dead. But a witness comes forward with an incredible tale of murder and survival.

Three missing teens vanish from a small town, leading detectives down a dark path toward a predator hiding in plain sight.

Detectives uncover a bloody scene at the lavish Miami apartment of a successful social media influencer. What was really going on behind closed doors?