A woman's psychotic boyfriend attacks her with a meat cleaver. A man and his father are dumped in an icy Alaskan river. An intruder sexually assaults a woman and cuts her throat after she gets home from shopping.

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When Sherry Leighty goes missing in 1999, her family is left wondering how a dedicated mother of three could vanish without a trace. A decade later, the cold case heats up when Sherry's sister launches a social media campaign to help solve her sister's mysterious disappearance. An online tip unearths the truth and a sinister family secret.

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The longest running cold case of a law enforcement officer in the United States was the murder of Sheriff's Lt. Joe Clark.

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Two women fight for their lives when an attacker ambushes them on a mountain trail; two men survive 14 hours adrift at sea.

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The 1998 brutal murder of 36-year-old computer analyst Lisa Valdez inside her San Francisco studio condominium was a mystery until advances in forensic technology helped solve the case 13 years later.

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In 1987, 28-year-old Carol Murphy is found dead in a wooded area of Boulder, Colorado. It will take 20 years and a new technology to finally solve her murder.

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A woman survives being choked and raped by a new friend that hid his criminal past. A young mother survives over 25 stab wounds from her ex-boyfriend.

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When 31-year-old real estate appraiser Mike Williams mysteriously vanishes while duck hunting in the Florida swamps in December 2000, authorities assume that he accidentally drowned in Lake Seminole. But the case is re-examined sixteen years later after the police receive a distress call from the victim's wife, Denise Williams.

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In a big city like Philadelphia, it's easy for an unsolved murder to slip into the cold files and be forgotten. But in this case, one victim's boyfriend was set on doing everything possible to make sure people didn't forget, and that police didn't stop investigating.

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A 17 yr old woman is taken to a secluded forest and sexually assaulted. A man's hand gets caught in farm equipment. A friend stabs and slashes a 14 yr old girl's throat.

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A serial rapist is terrorizing women around Portland, Oregon, and investigators are faced with an endless list of potential suspects until a hunch finally pays off. 

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