20/20

After a woman was found dead, authorities uncovered an elaborate web of lies surrounding James Addie, spun to conceal his biggest secret of all – he was living a double life.

A new "20/20" documents the latest details in the developing story on the Murdaugh family murders, the alleged financial crimes of Alex Murdaugh and other unusual events surrounding the family.

Lori Vallow's brother Adam Cox sits down for the first TV network interview about the tragic family events that led up to the murders of his sister's two children.

For over 26 years, authorities tried to locate Jodi Huisentruit, a 27-year-old anchorwoman who vanished in Mason City, Iowa. Now "20/20" explores surprising new leads in the case.

Michigan mother of three Sharee Miller sat in the center of a complicated love triangle. She used sex, deception and the internet to pit her lover, Jerry Cassaday against her husband Bruce Miller.

A new "20/20," in collaboration with Plum Pictures, features an exclusive prison interview with Diane Staudte, the mother behind a sinister plot to poison her husband and two children.

In a special "20/20" event, ABC News reports on the latest chapter in the downfall of Elizabeth Holmes and her blood-testing company Theranos, once valued at $9 billion.

Diane Sawyer decodes the mysteries behind the Heaven's Gate cult, including an exclusive interview with Rio DiAngelo, a member who left the group.

Two months after his death, a new "20/20" reports on Robert Durst, the fugitive multimillionaire New York real estate heir and his shocking trial that led to a murder conviction.

A new "20/20" in collaboration with Plum Pictures features the first network interview with Wendi Mae Davidson from prison, where she is serving a 25-year sentence for her husband's murder.

For the first time in 20 years, Haylei Jordan speaks out to "20/20" and reveals insight into her mother's troubled past, including her allegedly volatile relationship with Larry McNabney.

Can text messages sent from miles away lead to time behind bars? "20/20" reports on the unprecedented suicide texting case that landed Michelle Carter in prison.

Anthony Harris speaks with ABC News' 20/20 more than 20 years after he was released from prison for a crime he didn't commit, the murder of his neighbor Devan Dunvier. Her killer is still wanted.

Never-before-broadcast video gives insight into the mind of serial killer Henry Louis Wallace, who confessed to 11 murders from 1990-1994, and his only surviving victim speaks in his first interview.

A couple is murdered inside their home. Could the killer be trying to hide a secret double life?

A new "20/20," in collaboration with Plum Pictures, features an exclusive interview with Laura Day, nearly a decade after her first-degree capital murder conviction for her 6-year-old stepson's death.

Aka "Wave of Deceit"

Two go on safari, one returns; an exclusive interview with a man who says he heard a shocking confession.

For three decades, Leo Schofield has been serving life in prison since his wife's brutal stabbing. The "20/20" season 45 premiere poses the question: is Leo in prison for the crime of another man?

Never-before-seen police tapes from inside the Sherri Papini case.

A workplace romance turns fatal for a Baton Rouge teacher-of-the-year mom. Could a three-year-old eyewitness help crack the case?

New details about the case of 17-year-old Brittanee Drexel, whose disappearance while on spring break stumped police for years.

An international search for a California man suspected in his wife's murder takes a shocking twist.

Video evidence leads police to learn the shocking identity of a former Arkansas senator's killer.

The murders of three young girls in 1977 turned an Oklahoma community upside down after the case went cold for decades.

John Quiñones examines why investigators say an act of "divine intervention" helped them solve a Minnesota farmer's murder.

When a husband is violently murdered, his wife and her alleged lover become suspects.

A mysterious drug overdose kills new mom Christina Harris. Would she leave behind a crucial clue that actually points to a killer?

Police launch a 38-day nationwide manhunt to find a 15-year-old Tennessee student taken by her teacher.

An exclusive interview with a fake doctor who hid a deadly secret.

Behind the glitz and glam of one of the sexiest shows in entertainment, an FBI investigation revealed Chippendales founder Steve Banerjee was the mastermind behind multiple murder-for-hire plots.

Same as Laura lee Day