In 1962 three convicts attempt the impossible; a prison break from Alcatraz. The official line is that the men drowned, but a new scientific experiment suggests they made it to the shore. Secret FBI reports hint they could have fled to Brazil.

In 2013, a Florida man is in bed when his room is swallowed by the Earth. Experts wonder if a rare and unpredictable kind of sinkhole is to blame.

The Roanoke colony vanishes without a trace from Roanoke Island, North Carolina. Centuries later, it remains one of history's greatest unsolved mysteries; but new evidence may, at last, reveal its fate.