Adolf Hitler (villain); Nazis (villain); Schnubel (villain, introduction, death); Boxer (villain, introduction, death); another agent (villain, introduction, death)
Adolf Hitler comes up with the idea to use Mars to help defeat America. He pays Schnubel to use a projector he has developed that can simulate Mars' atmosphere on earth. Schnubel uses his projector on the city and it is up to Pyroman to figure out how to stop him.
Doc Strange [Dr. Hugo Strange]; Mike; Virginia; Nomura (villain, introduction); the Japanese (villains)
Doc and Mike tackle the mystery of mysterious planes prowling the sky at night, only to disappear when Army fighters go aloft. Once they discover the Japanese are using a submarine aircraft carrier, they go in for the kill.