Jean-Paul Belmondo

as Le docteur Paul Simay

Mia Farrow

as Christine Dupont

Laura Antonelli

as Martine Dupont

Marlène Appelt

as L'Infirmière Carole

Dominique Zardi

as L'évêque

Daniel Lecourtois

as Le professeur Dupont

Daniel Ivernel

as Le docteur Berthier

Patrick Préjean

as Arthur Ringard