A friendly bet exposes a terrifying scene under a California home.

A beloved mother is found brutally murdered near the military town of North Pole, Alaska, and soon four more girls meet the same fate.

A homeowner discovers a mummified corpse buried inside a barrel beneath his home.

After two female college students go missing, a parole officer recalls startling information.

A young couple sets out from a holiday visit but never make it home as law enforcement search dangerous terrain fraught with derelict silver mines. In the black night and bitter cold, what happens when no one can hear you scream?

A retiree settles in Southern California hoping to live his best life; when he disappears without a trace, investigators must uncover if his demise was connected to the unconventional pen pals he made.

When a Michigan mother disappears on an afternoon walk, investigators pin all hope on their sole eyewitness: a 10-year-old boy who may have witnessed the unthinkable.

Bonnie Gamboa and her newborn inexplicably vanish from their California home. When blood is discovered in their backyard, a grieving father's world is flipped upside down and scrutinized. Investigators race against the clock to bring this mother and child home before it's too late, but in an astonishing twist, an unexpected suspect and a motive built around deception and lies leave investigators and family members stunned.

A pleasant Michigan day takes a dark turn when a field hand digs up a human skull in a sprawling backyard; the discovery leaves a tight-knit community shaken to its core and questioning whether a killer has penetrated the safety of its town.

A hike in the woods of the Hollywood Hills takes a terrifying turn when a dog digs up a female foot. As panic spreads through a Southern California community a family fears for its own safety and investigators will stop at nothing to catch a killer.

A lovesick teen goes missing, and investigators in Indiana learn she's keeping a secret; teens make a gruesome discovery in the woods, and a local high school's dark secrets are soon revealed.

When a promising forensics student is found mutilated on a lonely stretch of Utah motorway, her Sheriff's department colleagues will stop at nothing to deliver justice.

After a couple realizes their dogs have been bringing them human bones, cops discover a killer in the nearby woods.

When a successful lawyer's body is found buried in a South Floridian canal, detectives use innovative technology to follow the gruesome steps taken by an evil killer.

The discovery of a body buried in a Delaware backyard launches police into a twisted investigation.

A spunky grandmother and former bail bondswoman is a no-show at work, leaving friends and family desperate for answers.

When a California mother wakes to find the door wide open and her daughter missing, law enforcement travel the country to find her until they discover a dark plot that began at the teen's doorstep.

Detectives attempt to trace a young woman's last steps as she leaves a casino and disappears into the night. An almost forgotten childhood memory helps find her buried in the backyard.

A Milwaukee contractor is shocked when he discovers a body in a shallow backyard grave.

Federal agents descend on a tiny Ohio town after a beloved girl goes missing.

A party in the woods of a Pennsylvania coal-mining town takes a turn when someone goes missing.

The luckiest moment in a man's life gives way to a dark mystery when he vanishes after winning a multi-million-dollar lottery.

A night out on Hollywood's notorious Sunset Strip leads to a desperate search when a teenage girl doesn't make it home. The search for answers weaves though the strange side of Los Angeles before the tragic truth is uncovered in the Hollywood Hills.

After two Colorado women vanish in a deadly winter storm, key evidence keeps the case open for investigators to uncover the truth; a harrowing blizzard rescue the very same night could hold the clues to an almost 40-year search for the killer.

A beloved high school track star vanishes into the Philadelphia night and those in her innermost circle are eyed as suspects. When a terrifying scene is unearthed in the nearby woods, a family demands answers, but nobody is prepared for the truth.