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George Peppard as P.J. Detweiler |
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Raymond Burr as William Orbison |
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Gayle Hunnicutt as Maureen Preble |
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Brock Peters as Waterpark |
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Wilfrid Hyde-White as Billings Browne |
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Jason Evers as Jason Grenoble |
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Coleen Gray as Betty Orbison |
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Susan Saint James as Linette Orbison |
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Severn Darden as Shelton Quell |
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Jane Van Duser as Elinor Silene (as H. Jane Van Duser) |
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George Furth as Sonny Silene |
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Barbara Dana as Lita |
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Herb Edelman as Charlie (as Herbert Edelman) |
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John Qualen as Poppa |
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Bert Freed as Police Lieutenant |
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Ken Lynch as Thorson |
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Jim Boles as Landlord's Agent |
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Arte Johnson as Jackie |
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King Charles MacNiles as Calypso Singer |
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Mary Gregory as Miss Winnick |
| Sound | Neal Hefti | Music |
| Writing | Philip H. Reisman Jr. | Story |
| Sound | Joseph Gershenson | Music Supervisor |
| Writing | Edward Montagne | Story |
| Directing | John Guillermin | Director |
| Sound | Waldon O. Watson | Sound |
| Art | Robert Priestley | Set Decoration |
| Art | Billy Sands | Assistant Production Design |
| Art | Cinefx | Title Designer |
| Costume & Make-Up | Jean Louis | Costume Design |
| Costume & Make-Up | Bud Westmore | Makeup Artist |
| Visual Effects | Albert Whitlock | Visual Effects |
| Sound | Lyle Cain | Sound |
| Production | Wes Thompson | Unit Production Manager |
| Directing | Phil Bowles | Assistant Director |
| Costume & Make-Up | Larry Germain | Hairstylist |
| Writing | Philip H. Reisman Jr. | Screenplay |
| Editing | Sam E. Waxman | Editor |
| Production | Edward Montagne | Producer |
| Art | John McCarthy Jr. | Set Decoration |
| Camera | Loyal Griggs | Director of Photography |
| Art | Alexander Golitzen | Art Direction |
| Art | Walter M. Simonds | Art Direction |
