Captain Marvel [also appears as Billy Batson]; Mr. Mind (villain); Hitchblock; Herkimer (first appearance, villain, crocodile man); Sylvester (first appearance, villain, crocodile man); Marmaduke (first appearance, villain, crocodile man)
Synopsis
Mr. Mind escapes again. Returning home, Billy receives a letter from Hollywood director Hitchblock, who wants to make a movie to warn America about Mr. Mind and the Monster Society. Mr. Mind infiltrates the studio and takes the place of the mechanical worm being used in the movie, and directs some of his monsters to kidnap Billy, who's acting in the film, and throw him off a cliff.