Cast
Serge Berry
Jacques Castelot
(uncredited)
Jacques Chevalier
Police inspector (uncredited)
Helmut Berger
Alain Revent
André Chanu
Doctor Schwartz
Guy Marly
Chemist
Howard Vernon
Maître Wasserman, property administrator
Robert Le Béal
Judge
Alberto Farnese
Alain's friend
Monique Mélinand
Neighbor witness
Charles Aznavour
Inspector Leroy
Françoise Brion
Jacqueline
Édith Scob
Sylvie Revent
Virna Lisi
Nathalie Revent
Paul Pavel
Delivery man
Paul Bonifas
Hotel porter
Roger Coggio
Alain Revent (voice)
Henri Crémieux
Professor Richet, psychiatrist
Nicole Gobbi
Marc Cassot
Vincent
Yves Brainville
Commissioner Dedru
Michel Peyrelon
Maître d'hôtel
Alain Noury
Dino
Dominique Marcas
Neighbor