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Roy Thinnes as David Norliss |
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Don Porter as Sanford T. Evans |
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Angie Dickinson as Ellen Sterns Cort |
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Claude Akins as Sheriff Tom Hartley |
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Michele Carey as Marsha Sterns |
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Vonetta McGee as Mme. Jeckiel |
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Hurd Hatfield as Charles Langdon |
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Robert Mandan as George Rosen |
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Stanley Adams as Truck Driver |
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Bob Schott as Sargoth |
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George DiCenzo as Man in Langdon Gallery |
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Patrick Wright as Larry Mather |
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Nick Dimitri as James Raymond Cort |
| Directing | Dan Curtis | Director |
| Writing | William F. Nolan | Teleplay |
| Writing | Fred Mustard Stewart | Story |
| Production | Dan Curtis | Producer |
| Sound | Bob Cobert | Music |
| Camera | Ben Colman | Director of Photography |
| Editing | John F. Link | Editor |
| Production | Hoyt Bowers | Casting |
| Art | Trevor Williams | Art Direction |
| Art | Reg Allen | Set Decoration |
| Costume & Make-Up | Fred B. Phillips | Makeup Artist |
| Production | Joe Wonder | Production Manager |
| Crew | Dick Ziker | Stunt Coordinator |
| Crew | Roger George | Special Effects |
| Sound | John Mick | Music Editor |
| Directing | Dan Alexander | Script Supervisor |
| Directing | Jack Bohrer | Assistant Director |