Jean-Paul Belmondo
Michel Poiccard / László Kovács

Jean Seberg
Patricia Franchini

Daniel Boulanger
Police Inspector Vital

Henri-Jacques Huet
Antonio Berrutti

Roger Hanin
Carl Zubart

Van Doude
American Journalist, Patricia's Friend

Claude Mansard
Claudius Mansard

Liliane Dreyfus
Liliane / Minouche

Jean-Pierre Melville
Parvulesco the Writer

Jean-Luc Godard
The Snitch

Richard Balducci
Tolmatchoff

André S. Labarthe
Journalist at Orly

François Moreuil
Journalist at Orly

Gérard Brach
Photographer (uncredited)

Philippe de Broca
A Journalist (uncredited)

José Bénazéraf
Man in a White Car (uncredited)

Jean Douchet
A Journalist (uncredited)

Raymond Huntley
A Journalist (uncredited)

Louiguy
(uncredited)

Michel Mourlet
Audience in the Movie Theater (uncredited)

Jean-Louis Richard
A Journalist (uncredited)

Jacques Serguine
(uncredited)

Jacques Siclier
(uncredited)