Serge Gainsbourg

as Serge Morgan

Jane Birkin

as Jane Swenson

Paul Nicholas

as Paul

Gabriele Ferzetti

as Inspector Bardeche

Paul Albert Krumm

as Lancan

Yvette Lebon

as La maîtresse d'Emery

Curd Jürgens

as Henri Emery

Laurence Badie

as Mme Carbona