When the Stewart family wakes up one morning, their 47-year-old mom, Kathy, is nowhere to be found. The last they knew, she went for a walk in downtown Ava, MO. But when her murdered body is found in nearby Cowskin Creek, the town erupts in fear.

When a young woman leaves home to join up with a goth community in Manchester, NH, her mom figures it's just a phase. But when she later disappears from a roadside bar, it's clear that something truly sinister has happened

When the body of a teenage girl is found dumped on the muddy banks of the Trinity River, Texas police identify her as 13-year-old Krystal Baker. Yet, sixteen years pass before Krystal's killer is brought to justice.

When a Lakota teen disappears after a night out in the mostly white town of Mobridge, SD, deep racial tensions erupt. And after her body is found in the mucky shallows of the Missouri River, detectives are stonewalled on both sides of the divide.

Outside Asheville, NC, a young mother is stabbed four times in the chest and left for dead in the French Broad River. But she lives long enough to seek out help -- and leave a cryptic clue for detectives.

A Marietta, GA, co-ed is eager to make the five-hour drive home to see her parents. But she never gets there. Her friends and coworkers have no answers, and when her body surfaces in the Oconee River, detectives realize that one of them is lying.

In Albany, NY, a young woman storms out of the house to track down her wayward boyfriend and disappears into the night. When her body is found washed up on the mucky banks of the Hudson River, detectives realize they have a killer on the loose.

When shots ring out on a remote Florida beach, officers are devastated to learn the lives of two Georgia teens have been lost. Even with two jurisdictions on the case, leads are scarce. Until an unexpected call comes in and promises swift resolution.

14-year-old Gina Marie Justi's body is discovered in a marsh near an orange grove, brutally raped and strangled. What follows is four decades of a game of cat and mouse.

Angela Crowley's body turns up partially clothed and strangled on the murky banks of the Cross Florida Barge Canal. Detectives discover shocking secrets as they unravel the mystery of who stalked and killed the innocent 21-year-old.

A party in the woods ends in tragedy when the body of 18-year-old Jarret Clark is found floating in a lake. With many people camping in the Oklahoma wilderness that night, it's only a matter of time before agents come across a key witness to the crime.

After 32-year-old Mark Mueller's body is pulled from the shore of Lake Michigan, police wonder how his favorite fishing spot became a scene for murder. It's not until his burned-out car is found miles away that officers finally get some answers.

When their car breaks down at the mall in Beaumont, TX, a young husband tells his wife to wait while he fetches their other ride. But when he returns minutes later -- she's mysteriously vanished. Does the nearby Big Thicket Swamp hold the answers?

After 30-year-old Lloyd Tobin is gunned down on a lakefront beach in Texas, his family launches their own investigation to help police solve the case. More than 20 years later, closure comes from a surprising source.

Heather Strong is a responsible mother of two. Detectives find her body rotting in a swampy overgrowth, and the investigation that follows untangles a web of romance and friendship that led to obsession, betrayal and ultimately murder.

On the morning of her 50th birthday, a woman is found face-down in Suqualena Creek near Meridian, MS, apparently drowned. But it's no accident. Her daughter and her best friend are distraught, but as detectives learn, both are hiding secrets.

Bill, Nancy, and her 8-year-old daughter, Sarah, live a happy life in the Arkansas Ozarks. So when their bodies are pulled from the dark, murky waters of the Illinois Bayou, police are devastated by the sight of them.

The headless body of 34-year-old Beverly McGowan turns up near the swampy shores of the Everglades. The murder takes detectives on a 12-year manhunt for an elusive and ruthless suspect.

Kenneth Richardson is an Indiana family man and an evangelist minister who knows the Bible by heart. When his body is found on the grimy banks of a Florida boat ramp in August 2001, detectives discover an arrow was the weapon of choice. 

When the body of 20-year-old transgender woman CeCe Dove is found floating in a suburban pond 20 miles from her Cleveland home, detectives consider motives personal and primal as they hunt down her ruthless killer.

When Andrea White suddenly disappears in Florida, leaving her four children behind, her concerned friends and family contact the police. As detectives investigate, they uncover a twisted, two-faced killer with a double life.

15-year-old Allison Tornensis is a teenager from the small town of Quilcene, Washington. In the summer of 1992, her body washes up on the murky shores of the Little Quil River.

Kathy Goble is a beloved mother of two and popular saleswoman at a high-end men's store in Charleston, West Virginia. When she doesn’t show up to work on a spring day in 2010, her co-workers and family know something's up.

After the body of wealthy Richard Hodges is found along the Missouri River, police find his mother has also been killed inside their home. As detectives get to work, they wonder if a secret in Richard's life might have been behind the murders.

When a night out ends in bloodshed for 23-year-old Navy veteran Raul Mendoza, Houston police have a lot of questions on their hands. But a tip from Raul's sister soon reveals that someone police have met before may hold the answers.