A look inside the Santa Monica, Cal., apartment that for 15 years served as the hideout for alleged Boston crime boss James "Whitey" Bulger; and the story of how an underground coal fire destroyed a Pennsylvania town. Also: a massive rock structure in South Florida that baffles scientists, scholars and engineers.
Examining if John Wayne died of cancer due to his exposure to a nuclear test site; and a look at whether settlers in Jamestown, Va., resorted to cannibalism in 1609. Also: Pensmore, a mansion in the Ozark Mountains of Highlandville, Mo., is investigated.
Sightings of a UFO and reports of a top-secret underground bunker, both at the Denver International Airport, are explored. Also: Two Internet rumors are explained during a visit to the White Sands Missile Range in New Mexico; and questions about the data NSA collects are answered.
An investigation into the 1971 disappearance of airplane hijacker D.B. Cooper, who parachuted from Northwest Airlines flight 727 with $200,000 and was never seen or heard from again. Also: the case of a toxic sinkhole that's threatening to swallow an entire Louisiana town; and criticism over a U.S. government roundup of wild horses in the West.
Mysteries and conspiracies in the U.S. are examined in this series, which begins with former CIA officer Mike Baker and actor Richard Belzer investigating the assassination of John F. Kennedy. Other segments look into the disposal of radioactive waste; and explore a quiet zone.