1947 Mexican mystery crime film directed by Ramón Peón

A murderer turns himself to the police, but claims amnesia and insists he's unable to tell them anything about his crime.

A Nazi scientist using the lost city of Atlantis as his home base threatens to destroy civilization with a nuclear bomb. The Nazi scientist wants the third Reich to rule again and if his demands are not meet he will follow through on his threat of nuclear annihilation. With very little time to spare Santo is enlisted to find the nuclear bomb, disarm it and end the Nazi scientist’s diabolical plan