Police find the body of former White House aide Jack Wheeler in a landfill; security footage captures strange happenings in the lead-up to his death.
A woman dies from a gunshot wound after checking into a luxury hotel in Oslo, Norway, with no ID or credit card; years later, her identity -- and her death -- remain a mystery.
A convicted killer escapes after being given a furlough to go Christmas shopping in 1973; police believe he is still at large.
Residents share stories about the spirits they encounter in the wake of the massive earthquake and tsunami that devastated Japan in March 2011.
Police find JoAnn Romain's abandoned car on an icy night and assume she drowned in a nearby lake by suicide, but her family suspects foul play.
In 1989, two toddlers vanish months apart from the same New York City park; a search turns up nothing, but their families don't give up hope.