Directed by
| David Kramarsky | ... | (directed by) |
| Roger Corman | ... | (some scenes) (uncredited) |
| Lou Place | ... | (uncredited) |
Writing Credits
| Tom Filer | ... | (screenplay by) |
Cast (in credits order) verified as complete
| Paul Birch | ... | Allan Kelley | |
| Lorna Thayer | ... | Carol Kelley | |
| Dona Cole | ... | Sandra Kelley | |
| Dick Sargent | ... | Deputy Larry Brewster (as Richard Sargeant) | |
| Leonard Tarver | ... | Him - aka Carl | |
 |
Bruce Whitmore | ... | The Beast (voice) |
| Chester Conklin | ... | Ben Webber | |
| Rest of cast listed alphabetically: | |||
| London | ... | Duke, the Dog (uncredited) | |
Produced by
| Samuel Z. Arkoff | ... | executive producer (uncredited) |
| Roger Corman | ... | executive producer (uncredited) |
| Charles Hannawalt | ... | associate producer (as Charles Hanawalt) |
| David Kramarsky | ... | producer (produced by) |
| James H. Nicholson | ... | executive producer (uncredited) |
Music by
| John Bickford | ... | (music) (credit only) |
Cinematography by
| Everett Baker | ... | (photography) |
| Floyd Crosby | ... | (uncredited) |
Editing by
| Jack Killifer | ... | film editor |
Art Direction by
| Albert S. Ruddy | ... | (as Albert Ruddy) |
Production Management
| Jonathan Haze | ... | production manager (as Jack Haze) |
Second Unit Director or Assistant Director
| Donald Myers | ... | assistant director |
Special Effects by
| Paul Blaisdell | ... | special effects |
| Forrest J. Ackerman | ... | special effects assistant (uncredited) |
Additional Crew
| Samuel Z. Arkoff | ... | presenter |
| Sheldon Mitchell | ... | technical director |
| James H. Nicholson | ... | presenter |
| Paul Blaisdell | ... | monster creator (uncredited) / monster effects (uncredited) |
| Charles P. Eisenmann | ... | dog trainer and owner (uncredited) |
