| Person | Type | Job | Role(s) |
|---|---|---|---|
 Bob Cobert | Crew | Sound | Original Music Composer |
 Charles B. Pierce | Crew | Art | Set Decoration |
 Dan Curtis | Crew | Directing | Director, Producer |
 Dick Ziker | Crew | Crew | Stunt Coordinator |
 Folmar Blangsted | Crew | Editing | Editor |
Hoyt Bowers | Crew | Production | Casting |
 Nick Dimitri | Crew | Crew | Stunts |
 Richard Matheson | Crew | Writing | Writer |
Robert B. Hauser | Crew | Camera | Director of Photography |
Trevor Williams | Crew | Art | Production Design |
 William Tuttle | Crew | Costume & Make-Up | Makeup Artist |
Jeffrey Grant Rice | Crew | Writing | Characters |
 Al Lewis | Cast | Actor | Tramp |
 Anne Randall | Cast | Actress | Policewoman Sheila |
Bill McLean | Cast | Actor | Charlie the Bartender (uncredited) |
 Darren McGavin | Cast | Actor | Carl Kolchak |
 Diane Shalet | Cast | Actress | Joyce Gabriel |
 George DiCenzo | Cast | Actor | Underground Tour Guide (uncredited) |
George Washburn | Cast | Police Officer (uncredited) | |
Hank Robinson | Cast | Actor | Police Officer (uncredited) |
 Ivor Francis | Cast | Actor | Dr. Webb |
 Jo Ann Pflug | Cast | Actress | Louise Harper |
 John Carradine | Cast | Actor | Llewellyn Crossbinder |
 Kate Murtagh | Cast | Actress | Janie Watkins |
Loren Brown | Cast | Bar Patron (uncredited) | |
 Margaret Hamilton | Cast | Actress | Prof. Crabwell |
Regina Parton | Cast | Actress | Merissa (Ethel Parker) |
 Richard Anderson | Cast | Actor | Dr. Richard Malcolm |
Rudy Doucette | Cast | Actor | Man on Tour (uncredited) |
 Scott Brady | Cast | Actor | Capt. Schubert |
 Simon Oakland | Cast | Actor | Tony Vincenzo |
Virginia Peters | Cast | Actress | Wilma Krankheimer |
 Wally Cox | Cast | Actor | Mr. Berry |
Francoise Birnheim | Cast | Restaurant Woman | |
George Tracy | Cast | Actor | Bar Patron (uncredited) |
 Nina Wayne | Cast | Actress | Charisma Beauty |
Joe Phillips | Cast | Actor | Detective (uncredited) |
Bill Clark | Cast | Actor | Bar Patron (uncredited) |
Alan Marston | Cast | Bar Patron (uncredited) | |
David Armstrong | Cast | Actor | Police Officer (uncredited) |
 Bob Harks | Cast | Actor | Bar Patron (uncredited) |
Robert Cole | Cast | Actor | Reporter (uncredited) |
Tony Dante | Cast | Reporter (uncredited) | |
Arnold Roberts | Cast | Reporter (uncredited) | |
Chester Hayes | Cast | Bar Patron (uncredited) | |
Al Roberts | Cast | Actor | Police Officer (uncredited) |
Al Beaudine | Cast | Reporter (uncredited) | |
Bob Templeton | Cast | Bar Patron (uncredited) | |
Margaret Bacon | Cast | Reporter (uncredited) | |
| Person | Type | Job | Role(s) |
