Blithe Spirit (1945)
An English mystery novelist invites a medium to his home, so she may conduct a séance for a small gathering. The writer hopes to gather enough material for the book he's working on, as well as to expose the medium as a charlatan. However, proceedings take an unexpected turn, resulting in a chain of supernatural events being set into motion that wreak havoc on the man's present marriage. love triangle, married couple, exorcism, medium, based on play or musical, murder, trance, author, maid, widower, novelist, screwball comedy, ghost, séance, mystery writer
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