Jean-Paul Belmondo
Commissioner Jean Letellier
Acting
Charles Denner
Inspector Moissac
Acting
Adalberto Maria Merli
Pierre Valdeck / Minos
Acting
Rosy Varte
Germaine Doizon
Acting
Jean Martin
Divisional commissioner Sabin
Acting
Lea Massari
Norah Elmer
Acting
Jean-François Balmer
Julien Dallas, student
Acting
Catherine Morin
Hélène Grammont
Acting
Roland Dubillard
Psychologist
Acting
Henry Djanik
Police inspector
Acting
Germana Carnacina
Pamela Sweet
Acting
Giovanni Cianfriglia
Marcucci
Acting
Jacques Paoli
Self
Acting
Philippe Brigaud
Neighborhood commissioner
Acting
Roger Riffard
Watchman Eugène Merclin
Acting
Georges Riquier
Prefect
Acting
Jean-Louis Le Goff
Sub-prefect
Acting
Maurice Vallier
Guest who goes to the wrong door
Acting
Maurice Auzel
Inspector
Acting
Henri-Jacques Huet
Julio Cortes, Norah's lover
Acting
Jacques Rispal
'Cacahuète'
Acting
Jean-Louis Fortuit
Police inspector
Acting
Gilberte Géniat
Germaine Doizon's concierge
Acting
Michel Berreur
Armed robber (uncredited)
Acting
Pierre Douglas
Radio journalist (uncredited)
Acting
André Valardy
Radio reporter (uncredited)
Acting
Albert Delpy
Sound engineer (uncredited)
Acting
Jacques Mathou
Tenant disturbed by Letellier (uncredited)
Acting