City After Midnight (1957)

A series of daring robberies has taken place on Rue des Anges, a quiet street in the town of La Bandelette. Standing by an open window in his study, Sir Maurice Lawes sees a gendarme beaten to death and the killer, who also sees Lawes, escape in a car. The next evening, the residents hear a shattering scream from Janice Lawes when she finds her father murdered. Chief Inspector Garon of the French police and private investigator Dermot Kinross are puzzled as to who would want to kill the kind Lawes: Was it divorcée Eve Atwood, whose bloodstained nightdress was found by the police? Or Toby, the son of the house, who had been secretly robbing his father to close the lips of his blackmailing mistress? Or was it a case of Robbery With Violence, as a valuable necklace was stolen from Sir Maurice's famous collection? Or was it the burglar who feared that Sir Maurice saw him kill the gendarme?