In the 15th century Richard Duke of Gloucester, aided by his club-footed executioner Mord, eliminates those ahead of him in succession to the throne, then occupied by his brother King Edward IV of England. As each murder is accomplished he takes particular delight in removing small figurines, each resembling one of the successors, from a throne-room dollhouse, until he alone remains. After the death of Edward he becomes Richard III, King of England, and need only defeat the exiled Henry Tudor to retain power.
| Camera | George Robinson | Director of Photography |
| Crew | Ford Beebe | Second Unit |
| Writing | Robert N. Lee | Screenplay |
| Costume & Make-Up | Vera West | Costume Design |
| Editing | Edward Curtiss | Editor |
| Costume & Make-Up | Otto Lederer | Makeup Artist |
| Production | Rowland V. Lee | Producer |
| Art | Jack Otterson | Art Direction |
| Costume & Make-Up | Jack Pierce | Makeup Artist |
| Art | Russell A. Gausman | Set Decoration |
| Directing | Rowland V. Lee | Director |
| Sound | Frank Skinner | Original Music Composer |
| Costume & Make-Up | Sam Kaufman | Makeup Artist |
| Sound | Bernard B. Brown | Sound Supervisor |
| Sound | William Hedgcock | Sound |
| Visual Effects | Jack Cosgrove | Visual Effects |
| Visual Effects | Russell Lawson | Visual Effects |
| Directing | Fred Frank | Assistant Director |
| Art | Richard H. Riedel | Art Department Assistant |
| Camera | Edward Colman | Camera Operator |
| Camera | Arthur Gerstle | Assistant Camera |
| Camera | Henry Schuster | Camera Technician |
| Camera | George J. Teague | Camera Technician |
| Editing | Paul Landres | Assistant Editor |
| Sound | Charles Previn | Music Director |
| Sound | Frank Skinner | Orchestrator |
| Sound | Ralph Freed | Music |
| Sound | Hans J. Salter | Music |
| Crew | Major G.O.T. Bagley | Technical Advisor |
| Crew | Gerald Grove | Technical Advisor |
| Crew | Fred Cavens | Technical Advisor |
| Sound | Louis Forbes | Music Coordinator |
