Directed by
| Julian Roffman | ||
Writing Credits
| Frank Taubes | ... | (script by) & |
| Sandy Haver | ... | (script by) & |
| Franklin Delessert | ... | (script by) |
| Slavko Vorkapich | ... | (dream sequences) |
Cast (in credits order) verified as complete
| Paul Stevens | ... | Doctor Allan Barnes | |
| Claudette Nevins | ... | Pam Albright | |
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Bill Walker | ... | Lieutenant Dan Martin |
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Anne Collings | ... | Miss Goodrich / Woman in Nightmare |
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Martin Lavut | ... | Michael Radin |
| Leo Leyden | ... | Doctor Soames | |
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Norman Ettlinger | ... | Professor Quincey |
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W.B. Brydon | ... | Detective Bill Anderson (as Bill Bryden) |
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Jim Moran | ... | Jim Moran |
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Eleanor Beecroft | ... | Mrs. Kelly |
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Ray Lawlor | ... | Lab Technician |
| Rudi Linschoten | ... | Barnes' Alter Ego in Nightmare | |
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Stephen Ker Appleby | ... | Museum Guide (as Steven Appleby) |
| Alfie Scopp | ... | Taxi Driver | |
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Paul Elsom | ... | Scarred Figure in Nightmare |
| Rest of cast listed alphabetically: | |||
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Harry Blackstone | ... | Self (in introduction added to video version) (uncredited) |
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Nancy Island | ... | Radin's Victim (uncredited) |
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Paul Nevens | ... | Demon of the Mask (uncredited) |
Produced by
| Sandy Haver | ... | associate producer |
| Julian Roffman | ... | producer |
| Frank Taubes | ... | associate producer |
| Nat Taylor | ... | producer (uncredited) |
| Yvonne Taylor | ... | associate producer |
Music by
| Louis Applebaum | ||
Cinematography by
| Herbert S. Alpert | ... | director of photography |
Editing by
| Stephen Timar | ||
Art Direction by
| David R. Ballou | ||
Production Management
| William S. Owens | ... | production manager |
Art Department
| Hugo Wuethrich | ... | associate art director |
Sound Department
| Willard W. Goodman | ... | sound |
| Dick Vorisek | ... | sound re-recordist |
Visual Effects by
| James B. Gordon | ... | special photographic effects |
Music Department
| Myron Schaeffer | ... | composer: electronic music |
| Louis Applebaum | ... | conductor (uncredited) |
Additional Crew
| Don Gillies | ... | choreographer |
| Jan Henry | ... | dialogue director |
| Jean S. Lenauer | ... | production consultant |
| Rudi Linschoten | ... | mime |
| Charles W. Smith | ... | stereoscopic control |
