Don examines a whirlwind adventure, a deep-sea enigma and a Cold War plot.

Don examines a scam artist, an African lake and a birthday wish.

Don investigates a daring escape, a baffling murder and a high-flying duel.

Don examines a campaign t-shirt, an unusual bomb and a daredevil journey.

Don investigates one of the most epic stories of survival in the Antarctic.

Don investigates an art scandal, a high-stakes game and a viral video.

Don investigates the cause and aftermath of a 1972 flight disaster.

Don examines an American icon, a thwarted bomb plot and a wartime escape.

Don examines the motives behind America's first political assassination.

Don examines a Geiger counter, a pair of silver shoes and a skull.

Historic sniper test in Dealey Plaza, nuclear waste dump and US Quiet Zone.

New DB Cooper skyjack tests and mustang controversy.

Denver Airport doomsday bunker & UFO, and NSA's Spy Center.

Look into John Wayne's death, Pensmore Mansion and Jamestown cannibals.

Fugitive gangster Whitey Bulger, a city on fire, and one man's castle.

$2 million luxury survival condos in a converted missile silo.