20/20 on OWN

A supposed psychic orchestrates a decade-long swindle that rooks a millionaire.

Unrequited love twists into online taunts that somehow lead to murder; clues lead to a shadowy figure convincing unlikely assassins to do his bidding.

When two journalists are murdered on air, a story emerges of a reporter whose career spiraled into disappointment, rage and delusion.

A surgeon shares his plan to off his wife with his girlfriend, who—unbeknownst to him—records the conversation on her phone. The question, however, is whether the plot was real or a dark fantasy.

Examining an incident in which the crew member of a film shooting on a railroad bridge died when a train suddenly appeared. Also: the mother of a dying child reaches out to celebrities, but questions about her story are raised.

A report on the polygamist community of the FLDS church. Included: the efforts of three former members to extract their children from what they say is a life of abuse.

Examining if a bitter divorce and custody battle drove two teenage sisters to disappear from their Minnesota home for more than two years.

Examining a case of road rage that that led to the shooting death of a mother of four in her Las Vegas cul-de-sac after giving her 15-year-old daughter a driving lesson.

The May 2015 murders of a prominent Washington, D.C., family and their housekeeper are investigated.

The story of a woman who left her husband and family to marry a convicted serial killer.

The case of Ethan Couch, who killed four people in a drunken-driving accident. His trial made headlines when his lawyers claimed he suffered from "afflluenza" in an attempt to keep him out of prison.

Mexican actress Kate del Castillo describes her encounter with drug lord Joaquin "El Chapo" Guzman.