An alien from Venus tries to take over the world with the help of a disillusioned human scientist, as his wife, his best friend and the friend's wife try to intervene.
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| Directing | Roger Corman | Director |
| Production | Samuel Z. Arkoff | Executive Producer |
| Sound | Ronald Stein | Original Music Composer |
| Crew | Paul Blaisdell | Special Effects |
| Production | Roger Corman | Producer |
| Production | James H. Nicholson | Executive Producer |
| Writing | Charles B. Griffith | Writer |
| Costume & Make-Up | Larry Butterworth | Makeup Artist |
| Editing | Charles Gross Jr. | Editor |
| Production | Lou Place | Production Manager |
| Writing | Lou Rusoff | Screenplay |
| Camera | Frederick E. West | Director of Photography |
| Visual Effects | Paul Blaisdell | Creature Design |
| Sound | Jay Ashworth | Sound |
| Sound | Al Overton | Sound |
| Sound | Philip Mitchell | Sound |
