Directed by
| Jean Yarbrough | ||
Writing Credits
| Charles R. Marion | ... | (screenplay) |
| Bert Lawrence | ... | (additional dialogue) |
| Charles R. Marion | ... | (story) (uncredited) |
Cast (in credits order) verified as complete
| Leo Gorcey | ... | Slip Mahoney | |
| Huntz Hall | ... | Sach | |
| Gabriel Dell | ... | Gabe Moreno | |
| Alan Napier | ... | Dr. Druzik | |
| Jane Adams | ... | Nancy Marlowe | |
| William 'Billy' Benedict | ... | Whitey (as Billy Benedict) | |
| Bernard Gorcey | ... | Louie | |
| Glenn Strange | ... | Atlas the Monster | |
| Benny Bartlett | ... | Butch (as Bennie Bartlett) | |
| David Gorcey | ... | Chuck | |
| Skelton Knaggs | ... | Hugo | |
|
|
William Yetter Sr. | ... | Otto (as William Yetter) |
| Minerva Urecal | ... | Mrs. Hoskins | |
| Chester Clute | ... | Mike Barton | |
|
|
Pat Goldin | ... | Father |
| Robert Coogan | ... | Young Man | |
| Rest of cast listed alphabetically: | |||
| Fred Aldrich | ... | Carnival Patron (uncredited) | |
| Stanley Blystone | ... | Henchman (uncredited) | |
|
|
Anna Chandler | ... | Woman (uncredited) |
| Kit Guard | ... | Benny, Who Announces Fire at Sam's (uncredited) | |
| Frank O'Connor | ... | Carnival Patron (uncredited) | |
| Tim O'Connor | ... | Hoskins Boy (uncredited) | |
|
|
Kent Odell | ... | Hoskins Boy (uncredited) |
|
|
Whitey Roberts | ... | Juggler (uncredited) |
|
|
Sammy Shack | ... | Carnival Patron (uncredited) |
| Harry Tyler | ... | Constable Isiah Hoskins (uncredited) | |
Produced by
| Jan Grippo | ... | producer |
Cinematography by
| Marcel Le Picard | ... | (photography) |
Editing by
| William Austin | ... | (edited by) |
Art Direction by
| Dave Milton | ||
Set Decoration by
| Raymond Boltz Jr. | ||
Makeup Department
| Jack P. Pierce | ... | makeup creator |
Production Management
| Allen K. Wood | ... | production supervisor |
Second Unit Director or Assistant Director
| William A. Calihan Jr. | ... | assistant director (uncredited) |
Sound Department
| Dean Spencer | ... | recordist |
| Tom Lambert | ... | sound (uncredited) |
| B.J. Remington | ... | sound (uncredited) |
Camera and Electrical Department
| Lloyd Garnell | ... | gaffer (uncredited) |
| Eddie Jones | ... | still photographer (uncredited) |
| Harry Lewis | ... | grip (uncredited) |
| William Margulies | ... | camera operator (uncredited) |
Costume and Wardrobe Department
| Joan Joseff | ... | costume jeweler (uncredited) |
Editorial Department
| Otho Lovering | ... | supervising film editor |
Music Department
| Edward J. Kay | ... | musical director |
Script and Continuity Department
| Ilona Vas | ... | script supervisor |