Works of art are disappearing, stolen by a master thief, a master of disguise. Father Brown has two goals: to catch the thief and to save his soul.
| Directing | Robert Hamer | Director |
| Production | Paul Finder Moss | Producer |
| Writing | Gilbert Keith Chesterton | Story |
| Writing | Maurice Rapf | Screenplay |
| Writing | Robert Hamer | Screenplay |
| Sound | Georges Auric | Original Music Composer |
| Camera | Harry Waxman | Director of Photography |
| Editing | Gordon Hales | Editor |
| Writing | Thelma Schnee | Screenplay |
| Writing | Thelma Schnee | Adaptation |
| Sound | Muir Mathieson | Conductor |
| Production | Leigh Aman | Production Manager |
| Art | John Hawkesworth | Art Direction |
| Camera | James Bawden | Camera Operator |
| Directing | Max Varnel | Assistant Director |
| Directing | Phyllis Crocker | Continuity |
| Costume & Make-Up | Julia Squire | Costume Designer |
| Costume & Make-Up | Bob Lawrance | Makeup Artist |
| Costume & Make-Up | Pauline Trent | Hairstylist |
| Sound | George Burgess | Sound Recordist |
| Sound | Leonard Bulkley | Sound Recordist |
| Production | Vivian Cox | Associate Producer |
