 Claude Massoulier is murdered while hunting at the same place than Julien Vercel, an estate agent that knew him and whose fingerprints are found on Massoulier s car. As the police discovers that Marie-Christine Vercel, Julien s wife, was Massoulier s mistress, Julien is very suspected. But his secretary, Barbara Becker, while not quite convinced he is innocent, defends him and leads her private investigations...