Alias Mr Twilight (1946)

Geoffrey Holden Lloyd Corrigan is an elderly conman who is a lovable old man when providing his beloved granddaughter Gigi Perreau with the simple luxuries of life yet has no qualms when working a racket devised to relieve his victims of their property Trudy Marshall is the governess of the granddaughter and is in love with a detective Michael Duane who is about to expose the old mans unsuspected activities