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Mathieu Carrière as Franz Eckerman |
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Jean-Pierre Aumont as Le professeur Jean Marcilly |
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Nicoletta Machiavelli as Héléna |
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Michel Duchaussoy as Le docteur Robert Desagnac |
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Marianne Eggerickx as Marianne Marcilly |
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Martine Sarcey as Le docteur Catherine Ponson |
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Benoît Allemane as Costet |
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Monique Mélinand as Elisabeth Marcilly |
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Christian Duroc as Ferrière |
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Pierre Santini as Dino |
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Andrée Tainsy as |
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Max Vialle as |
| Directing | Jacques Doniol-Valcroze | Director |
| Camera | Étienne Becker | Director of Photography |
| Editing | Nicole Berckmans | Editor |
| Art | Claude Pignot | Art Direction |
| Costume & Make-Up | Jeanine Fauvel | Costume Design |
| Production | Maurice Urbain | Production Manager |
| Sound | Jean-Claude Laureux | Sound |
| Production | Henri Michaud | Producer |
| Production | Maurizio Lodi-Fè | Producer |
| Production | Philippe Dussart | Producer |
| Production | Mag Bodard | Producer |
| Writing | Jacques Doniol-Valcroze | Writer |
| Writing | Alain Franck | Novel |
| Writing | Victor Vicas | Novel |
