 Deborah KerrCatherine de Montfaucon | Catherine de Montfaucon |
 David NivenPhilippe de Montfaucon | Philippe de Montfaucon |
 Sharon TateOdile | Odile |
 David HemmingsChristian | Christian |
 Donald PleasencePere Dominic | Pere Dominic |
 Edward MulhareJean-Claude Ibert | Jean-Claude Ibert |
 Flora RobsonCountess Estelle | Countess Estelle |
 John Le MesurierDr. Monnet | Dr. Monnet |
 Emlyn WilliamsAlain de Montfaucon | Alain de Montfaucon |
 Donald BissetRennard | Rennard |
| PPauline LettsMarianne | Marianne |
| RRobert DuncanJacques de Montfaucon | Jacques de Montfaucon |
| SSuky ApplebyAntoinette de Montfaucon | Antoinette de Montfaucon |
| CChris AdcockVillager (uncredited) | Villager (uncredited) |
| HHyma BeckleyVillager (uncredited) | Villager (uncredited) |
 Jim BradyVillager (uncredited) | Villager (uncredited) |
| OOlwen BrookesParty Guest (uncredited) | Party Guest (uncredited) |
| RRobin BurnsVillager (uncredited) | Villager (uncredited) |
| TTony CastletonVillager in Church (uncredited) | Villager in Church (uncredited) |
 Ernest ClarkFrench Police Inspector (uncredited) | French Police Inspector (uncredited) |
| JJohn DunbarGuest at Harp Recital (uncredited) | Guest at Harp Recital (uncredited) |
| NNorman FisherVillager (uncredited) | Villager (uncredited) |
 Frank ForsythGuest at Harp Recital (uncredited) | Guest at Harp Recital (uncredited) |
| AArthur GoodmanVillager (uncredited) | Villager (uncredited) |
| VVictor HarringtonVillager (uncredited) | Villager (uncredited) |
| LLew HooperVillager (uncredited) | Villager (uncredited) |
| DDickey LuckVillager (uncredited) | Villager (uncredited) |
| CColin McKenzieGendarme (uncredited) | Gendarme (uncredited) |
| GGeorge OliverVillager (uncredited) | Villager (uncredited) |
 Dido PlumbVillager (uncredited) | Villager (uncredited) |
