The Office of Scientific Investigations tracks down the source of increased magnetism and radioactivity in Los Angeles, and discovers that a man-made isotope is consuming available energy from nearby mass every few hours, doubling its size in the process. Although microscopic, it will soon become big enough to destroy Earth; and how to stop it is yet to be determined. The film's Deltatron special effects footage is taken from the 1934 German sci-fi film GOLD.
You can now watch The Magnetic Monster online on the following streaming providers in the United States.
| Writing | Curt Siodmak | Screenplay |
| Writing | Ivan Tors | Screenplay |
| Directing | Curt Siodmak | Director |
| Production | Ivan Tors | Producer |
| Directing | Herbert L. Strock | Director |
| Art | Victor A. Gangelin | Set Decoration |
| Sound | Blaine Sanford | Original Music Composer |
| Production | George Van Marter | Associate Producer |
| Sound | Paul Beaver | Original Music Composer |
| Art | George Van Marter | Production Design |
| Camera | Charles Van Enger | Director of Photography |
| Sound | Bill Naylor | Sound Effects |
| Editing | Herbert L. Strock | Supervising Editor |
| Crew | Harry Redmond Jr. | Special Effects |
| Visual Effects | Jack R. Glass | Visual Effects |
| Directing | Richard Dixon | Assistant Director |
| Directing | Maxwell O. Henry | Second Unit Director |
| Art | George Van Marter | Art Direction |
| Sound | Howard Fogetti | Sound |
