A family discusses their seemingly perfect husband and father’s deadly secret.

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A couple is murdered inside their home, possibly by someone trying to hide a secret double life.

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20/20 features a never-before-broadcast interview that provides insight into the mind of a serial killer, who confessed to 10 murders from 1990-1994, and an exclusive interview with the only surviving victim.

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Anthony Harris, accused of murder at just 12 years old, gives his first TV interview after his conviction was overturned. John Quiñones also reports on information that reignited the two-decade-old unsolved murder case of five-year-old Devan Duniver.

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The first wife of an accomplished “Jekyll and Hyde” surgeon mysteriously disappears. John Quiñones investigates.

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The search for a killer whose reign of terror left five Florida college students dead over four days.

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The couple at the center of the so-called “Gone Girl” kidnapping case reveal details about surviving their harrowing home invasion and kidnapping experience. Original air date: 6/4/21

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An unprecedented case puts Michelle Carter behind bars for encouraging her boyfriend's death via text messages.

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Unraveling the web of lies and false identities surrounding a woman whose husband turns up dead.

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A former Texas veterinarian gives her first network interview from prison while serving time for murdering her military hero husband.

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