The Best Episodes of Dateline: Secrets Uncovered Season 12

A Philadelphia murder reveals decades of misconduct in the city's criminal justice system and raises questions about whether police caught the right person.

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When Courtney Copeland is shot and killed, his mother investigates whether police detectives did enough to try to solve the case.

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Keith Morrison reports on a dramatic undercover operation in Palm Beach, FL, to save a wife and mother who has no idea she is in danger.

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A district attorney in Pennsylvania went missing in 2005 under mysterious circumstances seven years after he investigated sex-abuse allegations made against Penn State football coach Jerry Sandusky.

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Four years after a 28-year-old dies after hosting a New Year's Eve party, a jury must decide if it was suicide or murder.

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Friends of accused murderer Robert Durst talk about his arrest in New Orleans and his previous whereabouts over 30 years.

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When a woman returns two days after being reported abducted, authorities believe it's a hoax until a similar crime forces them to take another look.

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New interviews with insiders reveal how career criminal Charles Manson convinced his followers to kill innocent victims and deliver him the fame he craved.

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Rapper Meek Mill discusses controversies surrounding the criminal justice system, the parole system, wrongful convictions, challenges faced by law enforcement, alleged police abuse, and other topics.

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An investigation of abuse allegations against one of the owners of the religious reform school Circle of Hope.

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Oscar Pistorius shoots and kills his girlfriend just eight months after competing in the London Olympics, telling police that he believed she was an intruder and that he was acting in self-defense.

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A man is shot and killed while picking up his daughter for a court-ordered visit.

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An in-depth look at the journalists who exposed the dangers of cult leader Rev. Jim Jones.

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A car belonging to a missing man erupts in a blaze, leading to clues regarding his whereabouts.

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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.

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A dancer is murdered in her Virginia home; after interviewing a series of suspects, detectives realize the case is much more complicated than previously thought.

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A San Diego mother suddenly vanishes in 2014; nearly two years later, her body is found in San Diego Bay, but medical examiners say she has only been dead for a month or two.

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