Conspiracies swirl around Camp Hero, an abandoned military base on Long Island established in 1942. There, alleged covert government experiments occurred underground in the so-called Montauk Project. Experts discuss the critical role that the base played in defending America's coastline by air and sea from World War II well into the Cold War.

On a picturesque island off the coast of Brazil, this penal colony was once the site of a dramatic prisoner uprising; among the ruins lies the story of the violent rebellion and the recapturing of the island by military forces...