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The title is a reference to the mental state of leading lady Phyllis Calvert. Ms. Calvert plays an amnesiac, a victim of the wartime air raids, whose past is literally closed off to her. She doesn't know why, but everyone at every turn seems to want something from her--and some of these strangers have a homicidal glint in their eyes. Among the supporting players is Richard Burton, making his fourth screen appearance. Retitled as Her Panelled Door for U.S. theatrical release.