Could a cache of fantastic riches have been buried centuries ago on a tiny island in the North Atlantic? And if such a treasure exists, who buried it? For more than 200 years, treasure hunters have been coming to Oak Island in search of a treasure that has so far eluded them all, and has even cost six men their lives. Could it be that, as legend suggests, the treasure is protected by a deadly curse?

Abandoned cities. Ancient cultures nearly erased by time. And colossal empires that simply vanished without a trace. How does a civilization become "lost"' What could cause once-thriving groups of people to just abandon their great cities, never to return' Can modern scientific knowledge help answer the unsolved questions surrounding these lost civilizations, or is there something more mysterious at work'