History's Greatest Mysteries

With over 7,500 hours investigating the mystery, top D.B. Cooper expert, Eric Ulis, believes that he's found the true location where Cooper landed during his daring dive.

For 108 years, a dust-covered box has remained hidden in a British manor house and may contain evidence that will rewrite the most famous maritime disaster in history.

Led by maritime archeologist and shipwreck expert, Mensun Bound, follow a new ground-breaking expedition heading back into the frozen seas to hunt down Shackleton's lost ship.

He was the actor whose most famous role was assassinating a president. But was John Wilkes Booth also an escape artist? Did Booth evade justice and live for decades after killing Abraham Lincoln?

A former CIA operative's investigation into the Roswell crash arrives at a critical moment when the journal found among the possessions of Major Marcel undergoes a crucial test.

Smith digs deeper into the mystery of the journal as he studies writing samples to determine if the journal might have been written by one of Marcel's fellow officers.