When a young wife and mother, Natalie Mirabal, is found murdered and decapitated in Colorado's Lefthand Canyon, detectives uncover shocking secrets in this quiet, Rocky Mountain community.

Texas A&M student Kerry Kujawa left his dorm room on a spring afternoon to visit his online love interest, Kelley McCauley in San Antonio and never returned.

Richard Mason leads his son-in-law Kenneth Griffith and friend Earl Smock on a ride along the steep cliffs of Tennessee’s Signal Mountain, but their ATVs are found bloody and abandoned along the side of the road two days later.

After attending a party, a teenage girl's body is found deep in a snow-covered forest, raped and strangled.

When Las Vegas bookie Bruce Weinstein vanishes one hot summer night, leaving behind a bloody mattress with a bullet hole, his tight-knit family knows something is terribly wrong.

As an Atlanta police lieutenant is found deceased in the murky waters of Lake Thurmond in South Carolina, officers across three jurisdictions are dumbfounded as to how he passed.