How can you stop what you don't understand?
A detective comes out of retirement to help his daughter's fiance prove that he did not commit a series of murders.
Director: Jeannot Szwarc
Screenplay: David Epstein
Producer: Robert Halmi Jr.
Director of Photography: Bruno de Keyzer
Auguste Dupin
Claire Dupin
Prefet de police
Adolphe Le Bon
Philippe Huron
Melle L'Espanaye
Inspecteur Alphonse
Dupar