Former White House aide Jack Wheeler is found in a landfill; security footage shows him acting disoriented before his death.

A woman is found dead in a luxury hotel with no ID, credit cards, or luggage tags. Was she a spy?

Convicted killer Lester Eubanks escapes during a 1973 Christmas shopping furlough and has been a fugitive ever since.

Residents of Japan share stories of encounters with "ghosts" following the devastating 2011 Tohoku tsunami.

JoAnn Romain disappears from a church; police rule it a suicide by drowning, but her family suspects she was abducted.

Two toddlers vanish from the same New York City park months apart in 1989. Their families still search for them.