Helmut Berger as Dr. Frank Flamand

Brigitte Lahaie as Nathalie

Telly Savalas as Terry Hallen

Christopher Mitchum as Sam Morgan

Stéphane Audran as Mrs. Sherman

Caroline Munro as Barbara Hallen

Christiane Jean as Ingrid Flamand

Anton Diffring as Dr. Karl Heinz Moser

Tilda Thamar as Mrs. Francois

Howard Vernon as Dr. Orloff

Florence Guérin as Florence Guérin

Gérard Zalcberg as Gordon

Henri Poirier as Inspector Legris

Laure Sabardin as La réceptionniste

Amelie Chevalier as Mélissa

Marcel Philippot as Maxence

Tony Awak as Doudou

Mony Dalmès as La Baronne

Doris Thomas as La cantatrice

Daniel Beretta as L'homme du Bois de Boulogne

Antonina Laurent as Karen

Isabelle Cnokaert as Gina

Nicky Gorska as Femme Vitriol

Jean Tolzac as Concierge Hôtel

Jacques Couderc as Employé Morgue

Pascale Vital as La Barmaid

Lina Romay as Mme Orloff

Alain Barbier as Rachid

Thierry Fouques as Le secrétaire

Daniel Grimm as Wallace