Directed by
| Spencer Gordon Bennet | ... | (as Spencer Bennet) |
| Thomas Carr | ||
Writing Credits
| George H. Plympton | ... | (original screenplay) and |
| Joseph F. Poland | ... | (original screenplay) and |
| Lewis Clay | ... | (original screenplay) |
| Ray Bailey | ... | (based upon the famous newspaper feature by) |
Cast (in credits order)
| Tom Neal | ... | Bruce Gentry | |
| Judy Clark | ... | Juanita Farrell | |
 |
Ralph Hodges | ... | Frank Farrell |
| Forrest Taylor | ... | Dr. Alexander Benson | |
| Hugh Prosser | ... | Paul Radcliffe | |
| Tristram Coffin | ... | Krendon | |
| Jack Ingram | ... | Allen | |
| Terry Frost | ... | Chandler | |
| Eddie Parker | ... | Gregg | |
| Rest of cast listed alphabetically: | |||
| Stephen Carr | ... | Adrian Hill (uncredited) | |
| George DeNormand | ... | Henchman (uncredited) | |
| Charles King | ... | Ivor (uncredited) | |
| George Magrill | ... | Detective (uncredited) | |
| Knox Manning | ... | Narrator (uncredited) | |
| Tom Steele | ... | Henchman (uncredited) | |
| Dale Van Sickel | ... | Gregory (uncredited) | |
|
|
Rusty Wescoatt | ... | Henchman (uncredited) |
| Al Wyatt Sr. | ... | Henchman (uncredited) | |
Produced by
| Sam Katzman | ... | producer |
Cinematography by
| Ira H. Morgan | ... | director of photography |
Editing by
| Dwight Caldwell | ||
| Earl Turner | ||
Art Direction by
| Paul Palmentola | ||
Set Decoration by
| Sidney Clifford | ||
Production Management
| Herbert B. Leonard | ... | production manager (as Herbert Leonard) |
Second Unit Director or Assistant Director
| R.M. Andrews | ... | assistant director |
Art Department
| Glenn Cravath | ... | poster artist (uncredited) |
Special Effects by
| Howard Swift | ... | special animation effects (uncredited) |
Visual Effects by
| Howard Swift | ... | special animation effects (uncredited) |
Stunts
| George DeNormand | ... | stunts (uncredited) |
| Eddie Parker | ... | stunts (uncredited) |
| Dale Van Sickel | ... | stunts (uncredited) |
Music Department
| Mischa Bakaleinikoff | ... | musical director |
Additional Crew
| Stephen Carr | ... | dialogue director (uncredited) |
