Though his staunchest supporters may disagree, is arguably director Hugo Haas' best film. Adapted from Shirley Jackson's , the film is a tour de force for Eleanor Parker, who plays the schizophrenic title character. Depending on the circumstances, Lizzie adopts one of three distinct personalities--one is good, one is bad and the third is hopelessly neurotic. Psychiatrist Neal Wright (Richard Boone) tries his best to help Lizzie, but he is undercut by the abusive behavior of the girl's drunken floozy of an aunt (Joan Blondell). Financed by Kirk Douglas' Bryna Productions, was overshadowed by the box-office success of the similarly-themed , which was released shortly afterward. Pop crooner Johnny Mathis made his debut as a lounge singer in this film, performing "It's Not for Me To Say."