"Géo Paquet, aka The Gorilla, breaks from jail. Now an escaped convict, the elite agent must infiltrate a dangerous gang working for a foreign embassy as their leader, a spy enjoying diplomatic immunity, can't be arrested by regular police."
Lino Ventura
as Géo Paquet, Le Gorille
Charles Vanel
as Colonel Berthomieu
Pierre Dux
as Veslot
Bella Darvi
as Isolène
René Lefèvre
as Commissioner Blavet
Robert Manuel
as Casa
André Valmy
as Mauricet
Henri Crémieux
as X.A. Pallos
Jean-Roger Caussimon
as Léon
Jean-Max
as Councilor Smolen
Jean-Marie Rivière
as Valério
Yves Barsacq
as Berthier
François Darbon
as Popaul
René Bergeron
as Antoine Legrand, first hygiene inspector
Maurice Chevit
as Second hygiene inspector
Guy Mairesse
as Killer
Jacques Seiler
as Principal Inspector Antier
Robert Berri
as Combinat
Jean-Pierre Mocky
as Sébut
Marie Sabouret
as Chaboute
Jean Mercure
as Director of the DST
Bernard Borderie
Director
Antoine-Louis Dominique
Novel
Raoul Ploquin
Producer
Writer
Jean Leccia
Music
Jacques Robert
Jacqueline Brachet
Editor
Georges Van Parys
Louis Page
Director of Photography