Stéphane Audran
Dominique
Klaus Kinski
Pavel Richko / Torpédo I
Lilli Palmer
Helen
Michel Constantin
Coster
Angelo Infanti
Jean / Gianni
Jean Claudio
Fédor 'La Filature'
Frédéric de Pasquale
Nicolas Baslier Krestowitz
Noëlle Adam
Laurence, Dominique's friend
Philippe March
The effeminate salesman
Christine Fabréga
Sylvianne Collet
Jacques Harden
The Paris police inspector
Micheline Luccioni
The postal worker
Georges Lycan
Torpédo II
Philippine Pascal
The policewoman
Bernard Musson
Fécamp police inspector
Roger Lumont
The truck driver
Robert Favart
The Chief Commissioner
Catherine Jacobsen
Françoise Ormesseq, aka 'La 'boîte aux lettres'
Pierre Koulak
An inspector
Rita Maiden
The prostitute
Christian Brocard
The man in the mortuary (uncredited)
Marie-Pierre Casey
The woman in the mortuary (uncredited)
Roland Malet
A police officer (uncredited)
Yves Massard
An Inspector at the tail (uncredited)
Paul Pavel
An Inspector at the tail (uncredited)