Sexton Blake and Tinker foil criminal plot connected with the Tongs, and master-minded by "famous stamp collector" and millionaire.
| Actor | Role |
|---|---|
 George CurzonSexton Blake | Sexton Blake |
 Tod SlaughterMichael Larron | Michael Larron |
 Greta GyntMadamoiselle Julie | Madamoiselle Julie |
| TTony SympsonTinker | Tinker |
 Charles OliverMax Fleming | Max Fleming |
| MMarie WrightMrs. Bardell | Mrs. Bardell |
 David FarrarGranite Grant | Granite Grant |
| NNorman PierceInspector Bramley | Inspector Bramley |
| HH.B. HallamMonsieur Bertrand | Monsieur Bertrand |