Man in the Attic (1953)

London 1888 on the night of the third Jack the Ripper killing softspoken Mr Slade a research pathologist takes lodgings with the Harleys including a gloomy attic room for experiments Mrs Harley finds Slade odd and increasingly suspects the worst her niece Lily star of a decidedly Parisian stage revue finds him interesting and increasingly attractive Is Lily in danger or are her mothers suspicions merely a red herring