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Two Tulsa brothers fight for more than 20 years to prove their innocence after they were wrongfully convicted for separate murders.

Two Tulsa brothers fight for more than 20 years to prove their innocence after they were wrongfully convicted for separate murders.

Two years after the disappearance of his wife, Josh Powell kills his two sons and himself Josh's last in-depth TV interview a 911 dispatcher discusses the emergency call placed by a social worker.

Police investigate whether the shooting of a young woman in Utah was an accident or something more sinister.

A man dies in a shooting incident after tempers flare in a confrontation in Montana's Glacier National Park.

Co-lead investigator in the Steven Avery case Tom Fassbender discusses the case and allegations investigators coerced Avery's nephew, Brendan Dassey, into making a false confession.

A woman goes for a walk during a snowstorm and never returns.

It was called "the trial of the century" and, decades after the polarizing case, questions remain hear answers and insights through interviews done over the years, rare footage and revealing conversations with key players who offer new details.

Rocky Mountain National Park rangers question whether a woman's fatal fall was an accident or the result of an act of violence.

The unbelievable murder of Carol Kennedy, a popular college professor, artist and mother.

Rocky Mountain National Park rangers question whether a woman's fatal fall was an accident or the result of an act of violence.

The unbelievable murder of Carol Kennedy, a popular college professor, artist and mother.

The drug-related death of a 17-year-old girl sheds light on a new class of synthetic drugs that has law enforcement agencies on alert.

A teen driver discusses what happened the night she was involved in a car crash that left a pregnant woman and her son dead authorities try to determine if the incident was an accident or intentional.

Co-lead investigator in the Steven Avery case Tom Fassbender discusses the case and allegations investigators coerced Avery's nephew, Brendan Dassey, into making a false confession.

A woman goes for a walk during a snowstorm and never returns.

A teen driver discusses what happened the night she was involved in a car crash that left a pregnant woman and her son dead authorities try to determine if the incident was an accident or intentional.

When Tom Foley becomes the top suspect in his wife's murder, he spends the next two years trying to prove his innocence.

Authorities investigate multiple suspects when a vibrant young woman disappears on her son's fifth birthday.

A community comes together to search for a young woman who goes missing from a Halloween party.

After finding his wife and two children dead, a former Indiana state trooper spends 13 years trying to clear his name.