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A puzzling case of a missing mother in a suburban neighborhood believed to be safe; when they investigate, police find a dark side behind the bright facade.

An army major is attacked in his bed in the middle of the night; police uncover secrets that might hold the key to his murder.

A young girl abducted and raised by her kidnapper spends decades trying to find her way home, searching for her family, her name, and the truth about herself.

A relationship turns into something deadly.

Richard Engel investigates the poisoning death of former Russian agent and businessman Alexander Litvinenko; Engel travels to London, Moscow and Rome to take a deeper look into Litvinenko's death, the investigation and those involved in the case.

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The thousands of passengers who entered the Costa Concordia for a seven-day tour of the Mediterranean looked forward to a first-class, five star sail to exotic locales; but soon, they'd be trapped in a life-or-death struggle, to flee.

The thousands of passengers who entered the Costa Concordia for a seven-day tour of the Mediterranean looked forward to a first-class, five star sail to exotic locales; but soon, they'd be trapped in a life-or-death struggle, to flee.

The security cameras at the house of a wife and mother of three might hold the key to cracking the mystery of her vanishing.

A community is left disturbed when a Cornell student and star athlete gets stuck in the middle of a homicide case.

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When remains are discovered among the rubble after a house fire, authorities soon learn the incident was no accident.

After a woman reports a prowler, police find her Olympic bronze medalist husband dead in their backyard.

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