 | Faye Dunaway als Jill |
 | Frank Langella als Philippe |
 | Barbara Parkins als Cynthia |
 | Karen Blanguernon als Miss Hansen |
 | Raymond Gérôme als Commissaire Chameille |
 | Maurice Ronet als L'homme de l'organisation |
 | Michele Lourie als Cathy |
| Patrick Vincent als Patrick |
 | Gérard Buhr als Le psychiatre |
 | Louise Chevalier |
| Tener Eckelberry |
| Massimo Farinelli |
 | Jill Larson |
| Robert Lussac |
 | Franco Ressel |
 | Dora van der Groen |
| Les Zemgano |
 | Michel Charrel als Le mâle (uncredited) |
 | Patrick Dewaere als L'homme à l'écharpe jaune (uncredited) |
 | Anne Lonnberg als La deuxième baby sitter (uncredited) |
| René Clément | Director |
| Robert Dorfmann | Producer |
| Bertrand Javal | Producer |
| Arthur Cavanaugh | Novel |
| Daniel Boulanger | Adaptation |
| René Clément | Adaptation |
| Eleanor Perry | Scenario Writer |
| Sidney Buchman | Scenario Writer |
| Georges Casati | Executive Producer |
| Sidney Buchman | Associate Producer |
| Roger H. Lewis | Associate Producer |
| Ennio Nobili | Co-Producer |
| Andréas Winding | Director of Photography |
| Françoise Javet | Editor |
| Christiane Lack | Editor |
| Jean André | Art Direction |
| Robert André | Set Decoration |
| Marc Desages | Set Decoration |
| Georges Glon | Set Decoration |
| Aïda Carange | Makeup Artist |
| Simone Knapp | Hairstylist |
| Alain Belmondo | Unit Manager |
| Daniel Deschamps | Unit Manager |
| Denis Amar | First Assistant Director |
| Patrick Bureau | First Assistant Director |
| Eric Simon | Set Dresser |
| Maurice Dagonneau | Boom Operator |
| Joseph de Bretagne | Sound Engineer |
| Roger Corbeau | Still Photographer |
| Jean Harnois | First Assistant Camera |
| Georges Pastier | Camera Operator |
| Alain Pillet | Second Assistant Camera |
| Tanine Autré | Wardrobe Master |
| Yvette Bonnay | Assistant Costume Designer |
| Roxane Vaisborg | Assistant Costume Designer |
| Charles Chieusse | Location Manager |
| Georges Caroujat | Production Accountant |
| Jean Ravel | Editor |
| Gilbert Bécaud | Original Music Composer |
| Ring Lardner, Jr. | Additional Writing |
