The suspicious death of Rey Rivera, whose body was found in a hole in the roof of Baltimore's Belvedere Hotel.

Patrice Endres disappears from her hair salon in a tiny 13-minute window; her remains are found 600 days later.

Count Xavier Dupont de Ligonnes disappears after his wife and four children are found buried under their porch in France.

After a party in rural Kansas, Alonzo Brooks goes missing. His body is found weeks later in an area previously searched.

Residents of Berkshire County, MA, recount their harrowing experiences with a UFO sighting on September 1, 1969.

Lena Chapin disappears after claiming she helped her mother dispose of her stepfather's body years prior.