 |
Sydney Seaward as Inspector Dunbar |
|
Arthur M. Cullin as Dr. Cumberley |
 |
Harvey Braban as Gaston Max |
|
Annie Esmond as Denise Ryland |
|
Norman Page as Soames |
|
Kitty Fielder as Lady of the Poppies |
|
Kiyoshi Takase as Ho-Pin |
|
A.C. Fotheringham-Lysons as Henry Leroux |
 |
Mary Massart as Helen Cumberley |
|
Cyril Percival as John Howard Edel |
|
Ivy King as Mrs. Leroux |
 |
June Tripp as Mrs. Vernon |
|
Eric Albury as Gianopolis |
|
Geoffrey Benstead as Sowerby |
| Directing | René Plaissetty | Director |
| Writing | Sax Rohmer | Writer |
| Writing | Gerard Fort Buckle | Writer |
| Production | Oswald Stoll | Producer |
| Crew | Jack E. Cox | Cinematography |
