Lt. Col. Glenn Manning is inadvertently exposed to a plutonium bomb blast and although he sustains burns over 90% of his body, he survives. Then he begins to grow, but as he grows he starts losing his mind. By the time he stops he is 50 ft tall, insane and is on the rampage.
| Directing | Bert I. Gordon | Director |
| Writing | Mark Hanna | Screenplay |
| Writing | Bert I. Gordon | Screenplay |
| Production | Samuel Z. Arkoff | Executive Producer |
| Writing | George Worthing Yates | Writer |
| Production | Bert I. Gordon | Producer |
| Production | James H. Nicholson | Executive Producer |
| Sound | Albert Glasser | Original Music Composer |
| Camera | Joseph F. Biroc | Director of Photography |
| Editing | Ronald Sinclair | Editor |
| Art | William Glasgow | Production Design |
| Costume & Make-Up | Bob Richards | Costume Design |
| Production | Jack R. Berne | Production Supervisor |
| Costume & Make-Up | Robert J. Schiffer | Makeup Artist |
| Art | Glen Daniels | Set Decoration |
| Directing | Jack R. Berne | Assistant Director |
| Costume & Make-Up | Joan St. Oegger | Hairstylist |
| Art | Paul Blaisdell | Props |
| Crew | Flora M. Gordon | Special Effects Assistant |
