The Tunnel (S01E04)

Bob Baer and Dr. John Cencich press on with their inquiry into Adolf Hitler's demise, dispatching teams to Germany, Spain, and Argentina. Lenny DePaul and Sascha Keil uncover a previously unknown tunnel that connects Hitler’s bunker to Tempelhof Airport, where his personal aircraft was stationed. Meanwhile, Tim Kennedy teams up with a group of top marine archaeologists to explore the possibility of a German U-Boat lying off Argentina's coast. Lenny partners with Gerrard Williams to investigate whether Hitler could have reached Spain and evaded capture with assistance from Spanish dictator Francisco Franco.