Summary: In 2014, Malaysia Airlines flight MH370 vanishes. Rescue crews search its last known position but find nothing. The fate of the flight remains a mystery. Theories abound but facts are few. Did it crash and if so, why can't we find the wreckage?

Summary: Atlantis is one of the most famous disappearances of all time. After thousands of years, state-of-the-art technology might finally be able to crack this ancient mystery. And after nine hikers die in a gruesome cold case, new science provides a hot lead.

Summary: After a huge cargo ship suddenly vanishes with 27 crew members on board, new evidence suggests the culprit may be a mythical rogue wave. And could recently discovered evidence prove the existence of a ghost ship in the Californian desert?

Summary: In 1962, three convicts attempt the impossible and escape from Alcatraz prison. Officials believe the men drowned, but a new scientific experiment suggests they made it to shore.

Summary: New technology reveals lost cities in inhospitable jungle and researchers wonder if the mythical city of El Dorado could be the next discovery. After a crystal is found on a shipwreck, experts believe it could prove how Vikings discovered America.

Summary: The Roanoke colony vanished without a trace, and centuries later it remains one of history's greatest unsolved mysteries. But new evidence might at last reveal its fate. After a man is swallowed by the earth, experts wonder if a sinkhole is to blame.

Summary: After five planes vanish in the Bermuda Triangle, new science suggests a strange geological force is responsible. Today, satellites are revealing lost tribes living in the Amazon jungle, but some civilizations remain missing, stumping experts.

Summary: In 2009, an Air France flight went missing and investigators discover this tragedy could happen again. After a huge area of Siberian forest is destroyed, investigators race to find the culprit. New evidence may finally solve this century-old mystery.