|Charles Boyer||Gregory Anton|
|Ingrid Bergman||Paula Alquist|
|Joseph Cotten||Brian Cameron|
|Dame May Whitty||Miss Thwaites|
|Angela Lansbury||Nancy Oliver|
|Terry Moore||Paula, age 14|
After the death of her famous opera-singing aunt, Paula is sent to study in Italy to become a great opera singer as well. While there, she falls in love with the charming Gregory Anton . The two return to London, and Paula begins to notice strange goings-on: missing pictures, strange footsteps in the night and gaslights that dim without being touched. As she fights to retain her sanity, her new husband's intentions come into question.