Commissioner Jean Letellier
Inspector Moissac
Pierre Valdeck / Minos
Germaine Doizon
Divisional commissioner Sabin
Norah Elmer
Julien Dallas, student
Hélène Grammont
Psychologist
Police inspector
Pamela Sweet
Marcucci
Self
Neighborhood commissioner
Watchman Eugène Merclin
Prefect
Sub-prefect
Guest who goes to the wrong door
Inspector
Julio Cortes, Norah's lover
'Cacahuète'
Police inspector
Germaine Doizon's concierge
Armed robber (uncredited)
Radio journalist (uncredited)
Radio reporter (uncredited)
Sound engineer (uncredited)
Tenant disturbed by Letellier (uncredited)