Spellbound (1945)

Dr. Constance Petersen (Ingrid Bergman) is a psychiatrist at Green Manors mental asylum. The head of Green Manors has just been replaced, with his replacement being the renowned Dr. Anthony Edwardes (Gregory Peck). Romance blossoms between Dr. Petersen and Dr. Edwardes, but Dr. Edwardes starts to show odd aversions and personality traits.