One of Ray's least known films is also acclaimed by many critics as his best, featuring James Mason in one of his finest performances. Mason portrays a small-town schoolteacher who moonlights as a taxi driver to supplement his salary. When he begins taking cortisone to ward off the crippling effects of arthritis, his personality takes on a Jekyll-and-Hyde transformation. Ray's use of CinemaScope photography to frame this intense, close-in psychological drama is even more remarkable than in Rebel Without a Cause; what emerges is a powerful and many-layered vision of the pressures of middle-class life turning its uncomprehending victims into monsters.