Captain Marvel, Jr. [Freddy Freeman]; Thomas Mills (ambassador); Dolores Mills (ambassador's daughter); Mr. Macabre [Filpot](villain); Hans (villain); Mako (villain); un-named U-Boat Commander (villain, death); the Nazis (villains, some die)
Synopsis
Captain Marvel Jr. saves the life of a missing ambassador's daughter, then hits the trail to find and rescue her father from the clutches of Mr. Macabre, the Nazis and the Japanese!