Dateline Unforgettable - Season 4

A chance encounter on the Pacific Coast Highway with a woman he first spoke to in a jail cell leads Keith Morrison to re-examine the mysterious death of Las Vegas casino magnate Ted Binion.

When Dr. Joe Sonnier is murdered, the investigation reveals simmering jealousies and a love triangle. Andrea Canning recalls the brilliant yet humble doctor who dedicated his life to helping others

A charismatic pastor's dark secrets come to light, triggering a murder investigation. Josh Mankiewicz looks back at a case that shattered a congregation and exposed the cost of their unshakable trust.

When a woman is found dead in her SUV, the investigation into her murder reveals a tangled web of sex and lies. Dennis Murphy looks back on his unusual interview with the lead suspect.

Chris Smith's family received an email stating that he was leaving California to surf the world. Months later, they wondered if he really left. Keith Morrison offers new insights into the case.

After Lisa Zeigert is killed, her family keeps the case in the public eye for decades. Andrea Canning reflects on the harrowing mystery and discusses the inspiration she's drawn from Lisa's loved ones.

A woman in Los Angeles is killed in an apparent botched burglary; nearly 20 years later, a detective discovers a clue that turns the case on its head; Josh Mankiewicz revisits a story with a twist that surprised him.

Police investigate when the seemingly storybook romance between a football player and the homecoming queen ends in a death.