A well-known business lawyer is shot dead in the courthouse. A commissioner of the Criminal Brigade is in charge of the investigation and is helped by a journalist.

Cast

Claude BrasseurCommissaire Martin Griffon

Gabrielle LazureSybille Berger

Jean-Claude BrialyLe contrôleur Jean-François Rambert

Jean-Louis TrintignantChristian Lacassagne

Dayle HaddonSuzy Thomson, alias D'Annunzio