 | Terence Morgan als Mark Gordon |
 | Mai Zetterling als Nina Gordon |
 | Mandy Miller als Jill Gordon |
 | Guy Rolfe als Dr. John Ransome |
 | Eunice Gayson als Adele |
 | Joan Hickson als Mrs. Matthews |
 | Ina De La Haye als Mme. Bayanova |
 | Vera Day |
 | Marianne Stone als Nurse |
| Val Guest | Director |
| Val Guest | Writer |
| Doreen Montgomery | Writer |
| R. Howard Alexander | Story |
| Alfred Dunning | Story |
| George Minter | Producer |
| Ronald Binge | Music |
| Wilkie Cooper | Director of Photography |
| John Pomeroy | Editor |
| Maude Spector | Casting |
| Frederick Pusey | Art Direction |
| Graham Bond | Hairstylist |
| Harold Fletcher | Makeup Artist |
| Cliff Richardson | Special Effects |
| Alan Hume | Camera Operator |
| Splinters Deason | Script Supervisor |
| W. H. Lindop | Sound Recordist |
