 | Laurence Harvey als Eberlin |
 | Tom Courtenay als Gatiss |
 | Mia Farrow als Caroline |
 | Harry Andrews als Fraser |
 | Peter Cook als Prentiss |
 | Lionel Stander als Sobakevich |
 | Per Oscarsson als Pavel |
 | Barbara Murray als Miss Vogler |
 | Norman Bird als Copperfield |
 | Calvin Lockhart als Brogue |
 | Monika Dietrich als Hedwig |
 | Mike Pratt als Greff |
| Anthony Mann | Director |
| Laurence Harvey | Director |
| Anthony Mann | Producer |
| Quincy Jones | Original Music Composer |
| Thelma Connell | Editor |
| Derek Marlowe | Screenplay |
| Christopher Challis | Director of Photography |
| Austin Dempster | Director of Photography |
| Peter T. Davies | Sound Recordist |
| Harold Buck | Production Manager |
| Gerry Humphreys | Sound Recordist |
| Austin Dempster | Camera Operator |
| Carmen Dillon | Art Direction |
| Derek Marlowe | Novel |
| Patrick McLoughlin | Art Direction |
| Pierre Cardin | Costume Designer |
| Eddie Pike | Unit Manager |
| Maude Spector | Casting |
| Anne Box | Hairdresser |
| Jimmy Komisarjevsky | Assistant Director |
| Elaine Schreyeck | Continuity |
| Betty Adamson | Wardrobe Supervisor |
| Leslie Gilliat | Associate Producer |
| Jill Carpenter | Makeup Artist |
| Stephen Warwick | Assistant Editor |
