Directed by
| George Sherman | ||
Writing Credits
| Richard H. Landau | ... | (original screenplay) and |
| Raymond L. Schrock | ... | (original screenplay) |
Cast (in credits order) verified as complete
| Richard Dix | ... | Ralph Harrison | |
| Leslie Brooks | ... | Kay Morrell | |
| Michael Duane | ... | Jim Calhoun | |
| Mary Currier | ... | Edith Marie Harrison | |
| Mona Barrie | ... | Linda Vail | |
| Ray Walker | ... | Joseph Aloysius 'Joe' Conroy | |
| Claire Du Brey | ... | Laura - Harrison's Servant | |
| Rest of cast listed alphabetically: | |||
| Ernie Adams | ... | George (uncredited) | |
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Fred Amsel | ... | Messenger Boy (uncredited) |
| Baynes Barron | ... | Artist (uncredited) | |
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Jack Davis | ... | Henry Loring (uncredited) |
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Otto Forrest | ... | Whistler (uncredited) |
| Byron Foulger | ... | Jorgensen (uncredited) | |
| John Hamilton | ... | McLaren aka Mac (uncredited) | |
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Ernest Hilliard | ... | Butler (uncredited) |
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Doris Houck | ... | Girl (uncredited) |
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Pat Lane | ... | Detective Lieutenant (uncredited) |
| Nancy Saunders | ... | Girl (uncredited) | |
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Tony Shaw | ... | Detective (uncredited) |
| Arthur Space | ... | Dr. Gunther (uncredited) | |
| Ken Terrell | ... | Detective (uncredited) | |
| Fred 'Snowflake' Toones | ... | Fred (uncredited) | |
| Charles Trowbridge | ... | Dr. Winthrop (uncredited) | |
| Barbara Wooddell | ... | Miss Bailey (uncredited) | |
Produced by
| Rudolph C. Flothow | ... | producer |
Music by
| Herschel Burke Gilbert | ... | (uncredited) |
Cinematography by
| Allen G. Siegler | ... | (as Allen Siegler) |
Editing by
| Dwight Caldwell | ||
Art Direction by
| Hans Radon | ||
Set Decoration by
| Robert C. Bradfield | ... | (as Robert Bradfield) |
Second Unit Director or Assistant Director
| Carter De Haven Jr. | ... | assistant director (uncredited) |
Sound Department
| Howard Fogetti | ... | sound (uncredited) |
Stunts
| Ken Terrell | ... | stunts (uncredited) |
Music Department
| Mischa Bakaleinikoff | ... | musical director |
| Wilbur Hatch | ... | composer: theme music "The Whistler" |
| Daniele Amfitheatrof | ... | composer: stock music (uncredited) |
| Mischa Bakaleinikoff | ... | composer: additional music (uncredited) |
| George Duning | ... | composer: stock music (uncredited) |
| Werner R. Heymann | ... | composer: stock music (uncredited) |
| Paul Sawtell | ... | composer: stock music (uncredited) |
