| Tim Donnelly | ... | Richard Knight Jr. (as Timothy Donnelly) | |
| Paulette Breen | ... | Lena | |
| Dick Sargent | ... | Dr. Jameson | |
| Keenan Wynn | ... | Jake Noble | |
| David Hooks | ... | Prof. Richard P. Knight | |
| Peter Graves | ... | Jeffrey Knight | |
| Zale Kessler | ... | Dr. Nelson | |
| James Mantell | ... | Ricky Knight | |
| Lurene Tuttle | ... | Anna Noble | |
| Frank Ashmore | ... | George Walker | |
| Larry Manning | ... | Guide #4 | |
| William Bufkin | ... | Clone | |
| Tony Haig | ... | Jack | |
| Boyd Holister | ... | Senator | |
| Eddy Carroll | ... | Doctor | |
| John Donovan | ... | Guide #5 | |
| Greg Brickman | ... | Motorcycle rider | |
| Keith Langsdale | ... | Guide #3 | |
| Eileen Dietz | ... | Dana | |
| Eugene Robert Glazer | ... | Guide #2 | |
| Rick DiAngelo | ... | Guide #1 | |
| Joel Lawrence | ... | Guide #6 | |
| George P. Wilbur | ... | Walker man | |
| Chuck Hayward | ... | Walker man | |
| Amanda Davies | ... | Reporter Grady | |
| Frank Birney | ... | Reporter Birney | |
| rest of cast listed alphabetically: | |||
| Robert S. Fiveson | ... | Security Guard (uncredited) | |
Directed by | |||
| Robert S. Fiveson | |||
Writing credits | ||
| Bob Sullivan | (story) | |
| Ron Smith | (screenplay) and | |
| Bob Sullivan | (screenplay) | |
| Myrl A. Schreibman | (adaptation) and | |
| Robert S. Fiveson | (adaptation) | |
Produced by | |||
| Peter R.J. Deyell | .... | associate producer | |
| Ray Dryden | .... | supervising executive producer | |
| Robert S. Fiveson | .... | producer | |
| Walter Fiveson | .... | executive producer | |
| Michael D. Lee | .... | co-producer (as Michael Lee) | |
| Mark L. Rosen | .... | producer | |
| Myrl A. Schreibman | .... | producer | |
Original Music by | |||
| Hod David Schudson | |||
Cinematography by | |||
| Max Beaufort | (director of photography) | ||
Film Editing by | |||
| Robert Gordon | |||
Casting by | |||
| Susan Arnold | |||
Art Direction by | |||
| Steve Nelson | |||
Costume Design by | |||
| Durinda Wood | (as Durinda Rice Wood) | ||
Makeup Department | |||
| Joe Blasco | .... | special makeup effects artist | |
| Richard Rivas | .... | makeup supervisor | |
Second Unit Director or Assistant Director | |||
| Paul Berkowitz | .... | assistant director | |
| Bob K. Cummings | .... | assistant director (as Robert Cummings) | |
| Joe Giannone | .... | assistant director (as John Giannone) | |
| Michael D. Lee | .... | assistant director | |
Art Department | |||
| Frank Coccaro | .... | assistant art director | |
| Frank Coccaro | .... | property master | |
Sound Department | |||
| Richard L. Anderson | .... | sound effects editor | |
| Teresa Eckton | .... | sound effects editor | |
| H. Daniel Gross | .... | boom operator (as Dan Gross) | |
| Paul Jasiukonis | .... | sound effects editor | |
| Ken Robinson | .... | production sound mixer | |
Special Effects by | |||
| Steve Karkus | .... | special effects | |
Stunts | |||
| George P. Wilbur | .... | stunt gaffer (as George Wilbur) | |
Camera and Electrical Department | |||
| John Bertram | .... | key grip | |
| Mike Bruns | .... | grip | |
| Robert Cummings | .... | still photographer | |
| Frank Detone Jr. | .... | dolly grip | |
| Michael Duman | .... | electrician | |
| James J. Gilson | .... | electrician | |
| Brad Goldberg | .... | first assistant camera | |
| Daniel Graff | .... | gaffer | |
| Dwight Joseph Lavers | .... | best boy | |
| Guy Olds | .... | second assistant camera | |
| Harley Pence | .... | photographer: second unit | |
| Peter Saxby | .... | additional photographer | |
Costume and Wardrobe Department | |||
| Timaree McCormick | .... | assistant wardrobe | |
Editorial Department | |||
| Brogan De Paor | .... | assistant editor | |
| Brad Goldberg | .... | assistant editor | |
Music Department | |||
| Richard Thompson | .... | orchestrator | |
Other crew | |||
| Carolyn Haber | .... | secretary to producers | |
| Ruth Hill | .... | auditor | |
| Ray Hinton | .... | production assistant | |
| Danielle Hunter | .... | production assistant | |
| Michael La Coe | .... | location manager | |
| Timaree McCormick | .... | production assistant | |
| David Paananen | .... | production assistant | |
| Jeanne Rummans | .... | script supervisor | |
| Myrl A. Schreibman | .... | visual consultant (as M.A. Schreibman) | |
| Laurie Sossna | .... | production assistant | |
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| Project: Metalbeast | Jurassic Park | Repli-Kate | The Fly II | S4 |
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| Full cast and crew | Company credits | External reviews |
| News articles | IMDb Horror section | IMDb USA section |
| Add this title to MyMovies |
The beginning of this movie had me doubting that it would be little more than a typical B sci-fi flick. But, as it progressed I began to get interested and I saw the whole thing through. The premise is interesting, original, and has the makings of making a classic. Alas, it instead ended up a mediocre movie, done in by the usual factors which turn a potentially good movie into a bad movie (bad acting, low budget etc.). I'm interested to see how this would turn out if it were remade with good actors and a big hollywood budget.