Further investigation into reports about a possible Fourth Reich leads to a rumored weapons testing site in Germany, and a deserted island in Argentina, the possible home of nuclear facilities and postwar Nazi ties.
A declassified document points to Hitler and a close associate, Leon Degrelle, possibly having moved from Denmark to San Sebastian, Spain, where eyewitnesses are found. In Argentina, investigators speak with a relative of Hermann Goering and a man who claims his father worked for Martin Bormann.
Investigators examine the possibility that Hitler may have escaped to Denmark, where they check out a landing strip and bunker system. In Argentina, clues point to an area that may have been a Nazi militarized compound.
Season 2 begins with a return to Berlin, where a fifth possible exit from Hitler's bunker is discovered, resulting in the likelihood that other areas could have served as a makeshift runway out of the city. In Argentina, they investigate a new building that could be not just a hideout, but a military compound.