Josh hunts for the truth about the Third Reich's Amerikabomber, a warplane designed to obliterate New York City; ruins of a mysterious Nazi underground city and long-lost weapons factories provide clues about Hitler's dream-killing machine.

Josh braves the African savanna to investigate the rampage of two lions who killed as many as 135 railroad workers in 1898; to prevent more bloodshed, Josh joins wildlife rangers tracking a pair of rogue lions who are on a modern-day killing spree.

Josh saddles up to investigate a scandal over the remains of Buffalo Bill Cody. A first-hand account claims Bill's body was stolen and buried 500 miles away. With new leads and cadaver dogs, Josh digs for the cowboy's grave and the truth.

Josh dives into a mysterious Greek sea passage known as the ancient world's shipwreck capital. Chasing truth and treasure, Josh separates fact from myth and learns what makes these waters as deadly as the Bermuda Triangle.