"Ralf Milan, a hitman, arrives in Montpellier to kill an important witness. He checks in a hotel without knowing that his neighbour has become neurotic after his wife left him."
Lino Ventura
as Ralf Milan
Jacques Brel
as François Pignon
Caroline Cellier
as Louise Pignon
Jean-Pierre Darras
as Dr. Edgar Fuchs
Nino Castelnuovo
as Bellhop, room boy
Michele Gammino
as Pregnant woman husband
Xavier Depraz
as Louis Randoni
François Dyrek
as Félix, saboteur
André Valardy
as Jerry, hitchhiker
Angela Cardile
as Pregnant woman
Jean-Louis Tristan
as Hotel inspector
Jean Franval
as Truck driver
Pierre Collet
as Butcher
Arlette Balkis
as Patient
Jacques Galland
as Maître Chamfort, notary
Liza Braconnier
as Mrs. Randoni (uncredited)
Pierre Forget
as Félix (uncredited)
Sylvain Lévignac
as Nurse at the psychiatric clinic (uncredited)
Édouard Molinaro
as Café owner (uncredited)
Eric Vasberg
as Rally driver (uncredited)
Jacques Paoli
as Self (voice) (uncredited)
Serge Sauvion
as Sponsor of the attack (voice) (uncredited)
Georges Guéret
Roland Neunreuther
as Driver (uncredited)
Jacques Van Dooren
Director
Francis Veber
Theatre Play
Georges Dancigers
Producer
Alexandre Mnouchkine
Original Music Composer
François Rauber
Raoul Coutard
Director of Photography
Monique Isnardon
Editor
Robert Isnardon
Stunts
François de Lamothe
Production Design
Jacques Brizzio
Set Decoration
Jean-Louis Ducarme
Sound
Alex Pront
Screenplay
Robert Amon
Associate Producer
Ennio Nobili
Co-Producer
Raymond Leplont
Production Manager
Philippe Monnier
Assistant Director
Fred Runel
Alain Nauroy
Robert Christidès
Set Dresser
Pierre Duquesne
Assistant Art Director
Assistant Production Design
Claude Moesching
Elise Servet-Larocque
Jean-Louis Trinquier
Props
Gaston Demède
Sound Recordist
Pierre Rosso
Stunt Double
Jean Garcenot
Camera Operator
Étienne George
Still Photographer
Georges Liron
Marcel Azzola
Musician
Hélène Sébillotte
Script Supervisor