When a top-secret Nazi base, Maisy Battery, is discovered in France decades after the war ends, experts use cutting-edge tech to reveal the secrets of this deadly compound; what they find could change everything we know about D-Day and the last stand of the Nazi regime.

When a secret bunker and a vast network of tunnels are discovered after World War II, experts use cutting-edge tech to uncover if the high levels of radiation in the area could be connected to a classified Nazi nuclear program.