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Martin Balsam as Capt. Caleb Sark |
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Catherine Burns as Celeste Davillo |
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Chuck Connors as Brian DiPaulo |
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Donna Mills as Linda Daniel |
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Agnes Moorehead as Bronsky |
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Bart La Rue as Telephone Man |
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Eddie Egan as Lt. Costin |
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David Spielberg as Dr. Widdocomb |
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Peter Hooten as Chris Arden |
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John Karlen as Manning |
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John Martino as Steve Martin |
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Mary Grace Canfield as Charlady |
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Claude Johnson as Policeman |
| Directing | Jeannot Szwarc | Director |
| Production | Edward K. Milkis | Producer |
| Writing | Cliff Gould | Writer |
| Production | Thomas L. Miller | Producer |
| Sound | Robert Drasnin | Original Music Composer |
| Camera | Howard Schwartz | Director of Photography |
| Editing | Michael Vejar | Editor |
| Production | Ramsay King | Casting Director |
| Art | William L. Campbell | Art Direction |
| Art | Bill Ross | Supervising Art Director |
| Art | Jack Stevens | Set Decoration |
| Costume & Make-Up | Tom Miller | Makeup Artist |
| Costume & Make-Up | Charlene Walsh | Hairstylist |
| Crew | William O. Cairncross | Post Production Supervisor |
| Production | Wally Samson | Unit Production Manager |
| Directing | Ray Taylor Jr. | Assistant Director |
| Art | Arthur Friedrich | Property Master |
| Sound | William M. Andrews | Supervising Sound Editor |
| Sound | Wallace R. Bearden | Sound Mixer |
| Crew | R.C. Petersen | Special Effects |
| Production | Mildred Gusse | Casting Director |
| Costume & Make-Up | Luster Bayless | Costumer |
| Costume & Make-Up | Yvonne Wood | Costumer |
| Sound | Kenyon Hopkins | Music Supervisor |
| Sound | Jack Hunsaker | Supervising Music Editor |
| Production | John Detra | Post Production Coordinator |
| Art | Phill Norman | Title Designer |
