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In June 1977, three little girls are at summer camp when a vicious predator sneaks into their tent in the middle of the night. As day breaks, a camp counselor uncovers what will become one of the most notorious crimes in Oklahoma history.

In June 1977, three little girls are at summer camp when a vicious predator sneaks into their tent in the middle of the night. As day breaks, a camp counselor uncovers what will become one of the most notorious crimes in Oklahoma history.

In June 1977, three little girls are at summer camp when a vicious predator sneaks into their tent in the middle of the night. As day breaks, a camp counselor uncovers what will become one of the most notorious crimes in Oklahoma history.

In 1992, store clerks across the Midwest are being shot dead in the middle of the day. It's not long before police connect the dots and realize it's the work of one killer, and the race is on as he threatens to strike anywhere at any time.

In 1992, store clerks across the Midwest are being shot dead in the middle of the day. It's not long before police connect the dots and realize it's the work of one killer, and the race is on as he threatens to strike anywhere at any time.

After being seen with a mysterious stranger, a beautiful teen girl completely vanishes from her small town, turning up brutally slain days later in the Nevada desert. The search for her killer envelops the entire community, and the fear is palpable.

In 1992, store clerks across the Midwest are being shot dead in the middle of the day. It's not long before police connect the dots and realize it's the work of one killer, and the race is on as he threatens to strike anywhere at any time.

In November of 1991, 11-year-old Mark Himebaugh leaves home to check out a nearby brushfire and disappears without a trace. As police investigate, they discover that both his family and the town may have been hiding some disturbing secrets.

In 2018, a 16-year-old girl vanishes after attending a high school party in an isolated town in Northern California. The bizarre mystery leaves everyone wondering -- what happened to Karlie Guse?

A teenage girl disappears after supposedly meeting a mysterious cowboy.

In 1982, a young mother's husband discovers her murdered at home with an ax in her head. Everyone thinks a psychopath is on the loose, but police never make an arrest. Eventually, authorities will find that their killer is someone very close to home.

In 1991, the fire department arrives at a local yogurt shop in Austin, Texas. Inside, four innocent teenage girls are shot to death and burned. Police scramble to find an answer to what has become one of the most notorious crimes in Austin history.

A teen mysteriously vanishes after a strange night with friends.

After moving to a new city following her parents' divorce, a 14-year-old girl is dissatisfied with her new surroundings. She starts running away from home until one time, she never returns. It takes ten years before dark secrets are unlocked.

A horrendous ax murder haunts an upstate New York suburb for decades.

In 2007, a 19-year-old woman is brutally murdered in the small town of Winnsboro, Texas. The ensuing investigation reveals this small town has a few wolves masquerading in sheep’s clothing. Some secrets come to light, but others may be buried forever.

Four teenage girls are gunned down at an Austin yogurt shop.

When a teenage girl runs away no one realizes she's being held captive.

A young woman’s brutal murder devastates a small east Texas town.

In the '60s and '70s, a serial killer stalks young women in New Jersey. At the same time, three women in New York City are sadistically murdered. No one expects just one man caused the mayhem, let alone a seemingly ordinary father of three.

A mother's murder uncovers a tangled web of deception.

In 2003, a bank heist escalates into a robbery-homicide shattering the lives of those left behind. Federal and local law enforcement have his picture and DNA, but they still can't find the cold-blooded killer until they learn he hides in plain sight.

It takes decades for police to realize one man murdered at least 20 women.

A bank robber and murderer slips into the wind, and an epic manhunt ensues.