The recently widowed Mary Stuart returns to Scotland to reclaim her throne but is opposed by her half-brother and her own Scottish lords.
| Writing | Dudley Nichols | Screenplay |
| Directing | John Ford | Director |
| Art | Van Nest Polglase | Art Direction |
| Costume & Make-Up | Walter Plunkett | Costume Design |
| Production | Pandro S. Berman | Producer |
| Writing | Maxwell Anderson | Theatre Play |
| Camera | Joseph H. August | Director of Photography |
| Sound | Nathaniel Shilkret | Original Music Composer |
| Art | Darrell Silvera | Set Dresser |
| Sound | Hugh McDowell Jr. | Sound Recordist |
| Directing | Eddie Donahoe | Assistant Director |
