After rushing from his home, Ray Rivera disappears. Days later, his car is found and a strange sight at a historic hotel triggers a baffling mystery (IMDb).

A beauty salon owner and mother disappears without a trace and is later found deceased deep in the woods of Georgia. Many persons of interest come to light but no one is able to specifically say what happened or who took Patrice Endres' life (IMDb).

When an aristocrat and his entire family disappear, authorities unearth something horrifying.

Alonzo Brooks vanishes after a party. His body is found a month later. Many believe that this is an unsolved hate crime.

Residents of Berkshire County, Massachusetts, recall their baffling, terrifying experiences with a UFO on the night of September 1, 1969 (IMDb).

A young mother disappears after revealing to members of her family what really happened to her long-missing stepfather (IMDb).

Police find the body of former White House aide John P. Wheeler III in a landfill. Security footage captures strange events in the days leading up to his death (IMDb).

After checking in at a luxury hotel with no identification or credit card, a woman dies from a gunshot. Years later, her identity -- and her death -- remain a mystery (IMDb).

Given a furlough to go Christmas shopping in 1973, a convicted killer escapes. Police have come close to apprehending him but believe he's still at large (IMDb).

A massive earthquake and tsunami devastated Japan in March 2011. Residents share stories of the spirits they encountered in the wake of the disaster (IMDb).

On an icy night, police find JoAnn Romain's abandoned car and assume she drowned in a nearby lake by suicide. But her family suspects foul play (IMDb).

In May and August 1969, two toddlers vanished from the same New York City park. A search turned up nothing -- but their families haven't given up hope (IMDb).