[6] Cary Grant plays a wandering Londoner who’s reluctant to settle down. This changes when he discovers his mother, played by Ethel Barrymore, has terminal cancer. Poverty and loneliness drive Grant and Barrymore to desperate measures, and just when you think things can’t get any gloomier, the film ends with foreshadowing of the second world war. None But the Lonely Heart is a dark film, …