Final Analysis

In San Francisco, Freudian psychiatrist Isaac Barr treats Diana Baylor, a woman with obsessive–compulsive disorder suffering from frightening and horrific childhood memories, which include images of her drunken father and his death in a fire for which she wasn't blamed. Isaac becomes concerned about Diana's obsessive-compulsive habit of checking a handgun her sister gave her. Diana suggests Isaac meet her sister, Heather Evans, who knows things about their parents that may shed light on her neuroses. Heather tells him that Diana was sexually assaulted by their father, and denies giving her the gun. She reveals to him that she's unhappily married to a gangster, Jimmy Evans, whom she's afraid to leave under threat of retaliation. Isaac confesses that he finds her irresistible, and the two have sex. Afterwards, Heather divulges that her and Diana’s mother left after their father raped Diana. Subsequently, their father died in a fire, which police suspected Diana might have started. Heather defended her sister, who has since blocked the ordeal out of her memory.