Directed by
| Charles Barton | ||
Writing Credits
| Frederic Dannay | ... | (play) (as Ellery Queen) and |
| Manfred Lee | ... | (play) (as Ellery Queen) and |
| Lowell Brentano | ... | (play) |
| Bertram Millhauser | ... | (screenplay) |
Cast (in credits order)
| Lew Ayres | ... | Nick Milburn | |
| Ruth Coleman | ... | Kay Mallory | |
| Eugene Pallette | ... | 'Babe' Lawton | |
| Benny Baker | ... | Horace Dryden | |
| Vivienne Osborne | ... | Suzanne Duval | |
| Colin Tapley | ... | Dr. Randolph Brooks | |
| Howard Hickman | ... | Robert Mallory (as Howard C. Hickman) | |
| Robert Emmett O'Connor | ... | Officer Tim Harrigan | |
| Jed Prouty | ... | William Underhill | |
| Hattie McDaniel | ... | Ambrosia | |
| Ferdinand Gottschalk | ... | John Atherton | |
| Ellen Drew | ... | Secretary (as Terry Ray) | |
| Rest of cast listed alphabetically: | |||
 |
Geraldine Hall | ... | Maid (uncredited) |
| Ivan Miller | ... | Detective (uncredited) | |
| Frank O'Connor | ... | Cop (uncredited) | |
|
|
Stanhope Wheatcroft | ... | Mr. DeForest - Dress Designer (uncredited) |
Produced by
| William LeBaron | ... | producer (uncredited) |
| Robert North | ... | associate producer |
Cinematography by
| Harry Fischbeck | ||
Editing by
| James Smith | ||
Art Direction by
| Hans Dreier | ||
| A. Earl Hedrick | ||
Second Unit Director or Assistant Director
| John Burch | ... | assistant director (uncredited) |
Art Department
| A.E. Freudeman | ... | interior decorator |
Sound Department
| George Dutton | ... | sound recordist |
| Don Johnson | ... | sound recordist |
Costume and Wardrobe Department
| Eugene Joseff | ... | costume jeweller (uncredited) |
Music Department
| Boris Morros | ... | musical director |
| Gerard Carbonara | ... | composer: stock music (uncredited) |
| Friedrich Hollaender | ... | composer: stock music (uncredited) |
| Stephan Pasternacki | ... | composer: stock music (uncredited) |
| Heinz Roemheld | ... | composer: stock music (uncredited) |
Additional Crew
| Adolph Zukor | ... | presenter |
| Will Stanton | ... | double: Vivienne Osborne (uncredited) |
