 | Ronald Lewis als Alan Colby |
 | Diane Cilento als Denise Colby |
 | Claude Dauphin als David Prade |
 | Françoise Rosay als Madame Prade |
 | Bernard Braden als Harry Stonehouse |
 | Katya Douglas als Connie |
 | Barbara Chilcott als Baroness de la Vailion |
 | Anne Tirard als Nicole |
 | Edwin Styles als Doctor Roberts |
 | George Merritt als Mr. Manfield |
| Val Guest | Director |
| Val Guest | Screenplay |
| Gilbert Taylor | Director of Photography |
| Ronald Scott Thorn | Screenplay |
| Val Guest | Producer |
| Bill Lenny | Editor |
| Ronald Scott Thorn | Novel |
| Stanley Black | Original Music Composer |
| Anthony Masters | Art Direction |
| Kip Gowans | Assistant Director |
| Tony Sforzini | Makeup Artist |
| Beatrice Dawson | Costume Design |
| Scott Slimon | Set Decoration |
| Clifton Brandon | Production Manager |
| Moray Grant | Camera Operator |
| Doreen Dearnaley | Continuity |
| Bert Ross | Sound Recordist |
| Ivy Emmerton | Hairdresser |
| Stanley Black | Conductor |
| Victor Lyndon | Associate Producer |
