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Ruth Roman as Ann Hemple Nicholson |
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Sterling Hayden as John Emmett |
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Werner Klemperer as Dr. Frederick Simmons |
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Richard Gaines as Dean William Brant |
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Charles Davis as Edward Manning Kirkpatrick aka Kirk |
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Jeanne Cooper as Helen Bethke |
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Peter Hansen as Karl Plesser |
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Karl Ludwig Lindt as Dr. Reinhart Kissel |
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John Mitchum as Bud--Deputy Sheriff |
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John Frederick as Sheriff |
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Leonard Bremen as Collision Shop Owner (uncredited) |
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Sidney Clute as Mechanic (uncredited) |
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Ken Curtis as FBI Agent Jim Anderson (uncredited) |
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Harry Hines as Motel Owner (uncredited) |
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Tom McKee as Man from Sanitarium (uncredited) |
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Bert Stevens as Motorcycle Cop (uncredited) |
| Writing | Donald Hamilton | Novel |
| Production | Henry S. Kesler | Producer |
| Sound | Paul Sawtell | Original Music Composer |
| Directing | Henry S. Kesler | Director |
| Camera | Kenneth Peach | Director of Photography |
| Editing | Aaron Stell | Editor |
| Sound | Bert Shefter | Original Music Composer |
| Writing | Henry S. Kesler | Screenplay |
| Writing | Turnley Walker | Story |
| Sound | Francis J. Scheid | Sound |
| Sound | James Richard | Sound Editor |
| Costume & Make-Up | Einar Bourman | Wardrobe Designer |
| Production | Ralph E. Black | Production Supervisor |
| Directing | Horace Hough | Assistant Director |
| Writing | Donald Hamilton | Story |
| Costume & Make-Up | Adele Parmenter | Wardrobe Designer |
| Costume & Make-Up | Adele Parmenter | Costume Design |
| Production | Betty Pagel | Casting |
| Costume & Make-Up | Einar Bourman | Costume Design |
| Art | Herman N. Schoenbrun | Set Decoration |
| Art | Rudi Feld | Art Direction |
