Dateline: Unforgettable

When Britney Ujlaky disappears, a small Nevada town bands together to track down an unknown cowboy who's a potential suspect; Some stories are memorable for their twists, people or locations; this one checks all three boxes.

When Leslie Neulander dies after what seems like an accidental fall in the shower, her book club friends join forces to seek justice on her behalf; Andrea Canning reflects on some of the most determined women she's ever met.

An apparent home invasion in Minnesota leaves Heidi Firkus dead and her husband hospitalized.

After a mother is found murdered in her home, her son embarks on a 20-year quest for justice.

After a woman is murdered, a secret is exposed but a mystery still looms.

A mother is found dead in a house fire, then an autopsy reveals a brutal murder.