Ventriloquist and world traveler Gordon Cobb is murdered by a gang of jewel thieves. Baffled by the contradictory clues, Inspector Queen asks his son, Ellery, to help out.
| Actor | Role |
|---|---|
 Ralph BellamyEllery Queen | Ellery Queen |
 Margaret LindsayNikki Porter | Nikki Porter |
 Charley GrapewinInsp. Queen | Insp. Queen |
 Noel MadisonGordon Cobb | Gordon Cobb |
 Ann DoranSheila Cobb | Sheila Cobb |
 James BurkeSgt. Velie | Sgt. Velie |
 Anna May WongLois Ling | Lois Ling |
 Eduardo CiannelliCount Brett (as Edward Ciannelli) | Count Brett (as Edward Ciannelli) |
 Frank AlbertsonSanders | Sanders |
 Charles LaneDoc Prouty | Doc Prouty |
 Russell HicksHarry Walsh | Harry Walsh |
 Tom DuganMcGrath | McGrath |
 Mantan MorelandRoy | Roy |
 Theodore von EltzJim Ritter | Jim Ritter |