Elisabeth Bergner delivers a performance that comes close to her most charming work in this drama. She portrays “Gemma,” a woman struggling with misfortune, who meets the hopeful composer “Sebastian” (Hugh Sinclair). Although he develops feelings for her, his affections are stronger for “Fenella” (Penelope Dudley-Ward), who is married to his brother “Caryl” (Griffith Jones). Unable to marry the woman he desires, “Seb…