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'

Henri Gilabert

Pierre Koulak

An inspector

Alexandre Klimenko

Gérard Dauzat

Paul Bisciglia

Rita Maiden

The prostitute

Michel Charrel

An inspector

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)