Jean-Paul Belmondo

as Michel Poiccard / László Kovács

Jean Seberg

as Patricia Franchini

Daniel Boulanger

as Police Inspector Vital

Henri-Jacques Huet

as Antonio Berrutti

Roger Hanin

as Carl Zubart

Van Doude

as American Journalist, Patricia's Friend

Claude Mansard

as Claudius Mansard

Liliane Dreyfus

as Liliane / Minouche