| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alfred Greven | Crew | Production | Producer |
 Arthur Conan Doyle | Crew | Writing | Characters |
 Eduard von Borsody | Crew | Directing | Assistant Director |
Fredy Arnold | Crew | Costume & Make-Up | Makeup Artist |
 Fritz Arno Wagner | Crew | Camera | Director of Photography |
Gertrud Hinz-Nischwitz | Crew | Editing | Editor |
Hans Sommer | Crew | Sound | Music |
Hans Tost | Crew | Production | Production Manager |
Hermann Fritzsching | Crew | Sound | Sound |
 Karl Hartl | Crew | Directing | Director, Screenplay |
Karl Plintzner | Crew | Camera | Director of Photography |
Manon Hahn | Crew | Costume & Make-Up | Costume Design |
Otto Hunte | Crew | Art | Production Design |
Robert A. Stemmle | Crew | Writing | Screenplay |
Willy Schiller | Crew | Art | Production Design |
Erich Tannigel | Crew | Camera | Still Photographer |
Hans Joachim Wieland | Crew | Production | Production Manager |
Fritz Strack | Crew | Costume & Make-Up | Wardrobe Master |
Otto Sucrow | Crew | Costume & Make-Up | Wardrobe Master |
Hans Dublies | Crew | Costume & Make-Up | Makeup Artist |
Arthur Hämmerer | Crew | Camera | Still Photographer |
Wilhelm Weber | Crew | Costume & Make-Up | Makeup Artist |
 Angelo Ferrari | Cast | Actor | Gangster Fred im Expresszug |
 Aribert Grimmer | Cast | 2. Kriminalbeamter | |
Charly Berger | Cast | Actor | Beisitzender Richter |
 Clemens Hasse | Cast | Actor | Ganove Peter |
 Eduard von Winterstein | Cast | Actor | Richter |
 Edwin Jürgensen | Cast | Actor | Staatsanwalt |
 Erich Dunskus | Cast | Actor | Chef der Kriminalpolizei |
Erich Nadler | Cast | Actor | 3. Polizeioffizier |
 Ernst Behmer | Cast | Actor | Conductor |
 Ernst Legal | Cast | Actor | Dieter Jean |
 Ernst Waldow | Cast | Actor | Hoteldetektiv |
 F. W. Schröder-Schrom | Cast | Actor | Polizeidirektor |
 Gerhard Dammann | Cast | Actor | 3. Schlafwagenschaffner |
Günther Ballier | Cast | Actor | 1. Kriminalbeamter |
 Hans Albers | Cast | Actor | Sherlock Holmes / Morris Flint |
Hans Bergmann | Cast | Actor | Taxator |
 Hans Junkermann | Cast | Actor | Exzellenz Vangon |
 Hansi Knoteck | Cast | Actress | Jane Berry |
 Harry Hardt | Cast | Actor | Billy |
 Heinz Rühmann | Cast | Actor | Dr. John H. Watson / Macky McPherson |
Heinz Wemper | Cast | Verwalter des Lombard-Hauses | |
Hellmuth Passarge | Cast | Actor | |
 Hilde Weissner | Cast | Actress | Madame Ganymare |
 Horst Birr | Cast | Actor | 2. Schlafwagenschaffner |
Karl Jüstel | Cast | 1. Polizeioffizier | |
 Marieluise Claudius | Cast | Actress | Mary Berry |
Otto Krieg Helbig | Cast | Actor | Fotoreporter |
 Paul Bildt | Cast | Actor | Sir Arthur Conan Doyle |
 Siegfried Schürenberg | Cast | Actor | Gangsterboß Lapin |
 Walter Werner | Cast | Actor | Dr. Balderin |
 Willi Schur | Cast | Actor | Bahnbeamter bei der Gerichtsversammlung |
Alfred Schwarz | Cast | Actor | |
Fritz Draeger | Cast | Actor | 2. Gerichtsreporter |
Max Harry Ernst | Cast | 1. Gerichtsreporter | |
Theodor Thony | Cast | Actor | 3. Kriminalbeamte |
 Fred Goebel | Cast | Actor | Hotel-Empfangschef |
Walter Steinweg | Cast | Zivilbeamter im Polizeipräsidium | |
Albert Karchow | Cast | 2. Zuschauer bei der Gerichtsverhandlung | |
Erich Walter | Cast | Hoteldirektor | |
Fredy Walden | Cast | 1. Zuschauer bei der Gerichtsverhandlung | |
Paul Schwed | Cast | Actor | Der lange Poll |
Theodor Popp | Cast | Actor | |
Friedrich Weigelt | Cast | ||
Kurt Alexander Duma | Cast | ||
Georg Henry Tschersich | Cast | ||
Fred Tasso | Cast | ||
Herbert Gaidzik | Cast | ||
Hans Weidner | Cast | ||
Arthur Orlop | Cast | ||
Katharina Berger | Cast | Blumenmädchen im Hotel | |
Lothar Geist | Cast | Erwin Wutzke | |
Kurt Kramer | Cast | 2. Polizeioffizier | |
Friedrich Ohse | Cast | Polizeileutnant | |
 Boris Alekin | Cast | Actor | Hotelkellner |
| Person | Type | Job | Role(s) |
