Directed by
| George Archainbaud | ||
Writing Credits
| Willis Goldbeck | ... | (screenplay) |
| Stuart Palmer | ... | (story) |
Cast (in credits order) verified as complete
| Edna May Oliver | ... | Hildegarde Withers | |
| James Gleason | ... | Inspector Oscar Piper | |
| Bruce Cabot | ... | Addison 'Ad' Stevens | |
| Gertrude Michael | ... | Jane Davis | |
| Regis Toomey | ... | Detective Smiley North | |
| Edgar Kennedy | ... | Detective Donahue | |
| Tully Marshall | ... | Mr. MacFarland | |
| Jackie Searl | ... | Leland Stanford Jones | |
| Frederik Vogeding | ... | Otto Schweitzer, the Janitor (as Fredrik Vogeding) | |
| Barbara Fritchie | ... | Louise Halloran | |
| Gustav von Seyffertitz | ... | Dr. Max Von Immen | |
 |
Tom Herbert | ... | Detective McTeague |
| Jed Prouty | ... | Dr. Levine | |
| Rest of cast listed alphabetically: | |||
| Wade Boteler | ... | Bearded Diner (uncredited) | |
| Tommy Bupp | ... | School Boy (uncredited) | |
| Frank Mills | ... | Diner Counterman (uncredited) | |
| Monte Vandergrift | ... | Policeman (uncredited) | |
Produced by
| Pandro S. Berman | ... | executive producer |
| Kenneth Macgowan | ... | associate producer (as Kenneth Macgowan) |
Music by
| Bernhard Kaun | ... | (uncredited) |
| Max Steiner | ... | (uncredited) |
Cinematography by
| Nicholas Musuraca | ... | (as Nick Musuraca) |
Editing by
| Archie Marshek | ... | (as Archie F. Marshek) |
Art Direction by
| Albert S. D'Agostino | ... | (as Al D'Agostino) |
| Van Nest Polglase | ||
Costume Design by
| Walter Plunkett | ||
Second Unit Director or Assistant Director
| Thomas Atkins | ... | assistant director (uncredited) |
Sound Department
| John L. Cass | ... | sound recordist |
Special Effects by
| Harry Redmond Sr. | ... | special effects supervisor (uncredited) |
Camera and Electrical Department
| Willard Booth | ... | assistant camera (uncredited) |
| Frank Redman | ... | camera operator (uncredited) |
| Ollie Sigurdson | ... | still photographer (uncredited) |
Music Department
| Max Steiner | ... | musical director |
