Impasse of Two Angels (1948)

Stage actress Marianne has decided to give up her career to marry wealthy nobleman Marquis Antoine de Fontaines. As a wedding present, Antoine gives his future wife a precious diamond necklace, which is coveted by a gang of crooks. Jean, one of them, is given the mission to approach Marianne and steal the necklace from her. The only trouble is that when he meets her, she recognizes him as the man she once loved.