Mystic Comics #6

American reporter Keen Marlow is sent to Nazi Germany to report news other than what the government propaganda department releases. While investigating a prison, he is captured and tortured as a spy. Professor Eric Schmitt is thrown into the same cell with him for refusing to divulge his secret invention, a serum which he gives to Marlow before dying. With his strength enhanced by the serum, Marlow breaks out and creates the identity of the Destroyer, sabotaging Nazi activities and helping innocent Germans.