Frank Finlay

Commissaris Simon "Piet" van der Valk

Andrée Champeaux

Mrs Barkhuis

Odile Versois

Miss Lindberg

Hans Christian Blech

Berenson

Jacques Monod

The Mayor

Danièle Girard

The Mayor's wife

Vernon Dobtcheff

Reinders

Eva Simonet

Betty Reinders

Dominique MacAvoy

Betty Reinders's sister

Françoise Prévost

Arlette van der Valk

Alan Adair

The Prosecutor

René Arrieu

The dairy manager

Marcel Cravenne