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John Agar as Alex Marsh |
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Paula Raymond as Carol Wilson |
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Stephen Dunne as Tom Holland |
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Roy Gordon as Dr. Frederick Ramsey |
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John A. Alonzo as Carlos, lab assistant |
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Jack Younger as Mike The Mailman |
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Joe Besser as Service station attendant |
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Butch Patrick as Davey, little boy on beach |
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Norman Burton as Chief Homicide Investigator |
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Fred Krone as Cab Driver |
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Kevin Enright as Police Photographer |
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Jack Donner as Cop |
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Chuck Niles as Reporter |
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Ruth Terry as Woman with Packages |
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Bob Whitney as Cop |
| Sound | Sonny Burke | Original Music Composer |
| Directing | Gene Nelson | Director |
| Writing | Eugene Ling | Writer |
| Camera | Floyd Crosby | Director of Photography |
| Production | Eugene Ling | Producer |
| Costume & Make-Up | John Intlekofer | Wardrobe Master |
| Sound | Sonny Burke | Conductor |
| Directing | Winifred Gibson | Script Supervisor |
| Sound | Victor B. Appel | Sound |
| Sound | Arthur Cornell | Supervising Sound Editor |
| Art | Ygnacio Sepulveda | Property Master |
| Directing | Willard Kirkham | Assistant Director |
| Production | Harold E. Knox | Production Supervisor |
| Costume & Make-Up | Bob Mark | Makeup Artist |
| Art | Harry Reif | Set Decoration |
| Editing | Jodie Copelan | Supervising Editor |
| Editing | Carl Pierson | Editor |
| Writing | Harry Spalding | Writer |
