Directed by
| Edwin L. Marin | ||
Writing Credits
| Arthur Conan Doyle | ... | (suggested by book "A Study in Scarlet") (as A. Conan Doyle) |
| Robert Florey | ... | (screenplay) |
| Reginald Owen | ... | (dialogue) |
Cast (in credits order) verified as complete
| Reginald Owen | ... | Sherlock Holmes | |
| Anna May Wong | ... | Mrs. Pyke | |
| June Clyde | ... | Eileen Forrester | |
| Alan Dinehart | ... | Merrydew (as Allan Dinehart) | |
| John Warburton | ... | John Stanford | |
| Alan Mowbray | ... | Lastrade | |
| Warburton Gamble | ... | Dr. Watson | |
| J.M. Kerrigan | ... | Jabez Wilson | |
| Doris Lloyd | ... | Mrs. Murphy | |
| Billy Bevan | ... | Will Swallow | |
| Leila Bennett | ... | Daffy Dolly | |
| Wyndham Standing | ... | Capt. Pyke | |
| Halliwell Hobbes | ... | Dearing | |
| Rest of cast listed alphabetically: | |||
| Hobart Cavanaugh | ... | Thompson - Innkeeper (uncredited) | |
| Olaf Hytten | ... | Merrydew's Butler (uncredited) | |
 |
Tetsu Komai | ... | Ah Yet (uncredited) |
| Tempe Pigott | ... | Mrs. Hudson (uncredited) | |
|
|
Cecil Reynolds | ... | William Baker (uncredited) |
Produced by
| Samuel Bischoff | ... | producer (uncredited) |
| Burt Kelly | ... | producer (uncredited) |
| William Saal | ... | producer (uncredited) |
Cinematography by
| Arthur Edeson | ... | (photography) |
Editing by
| Rose Loewinger | ||
Art Department
| Ralph M. DeLacy | ... | settings |
Sound Department
| Hans Weeren | ... | sound engineer |
Editorial Department
| Martin G. Cohn | ... | supervising editor |
Music Department
| Val Burton | ... | musical director (uncredited) |
Script and Continuity Department
| Reginald Owen | ... | continuity |
Additional Crew
| E.W. Hammons | ... | presenter (as EWHammons) |
| Gordon Magee | ... | technical advisor (uncredited) |
