In Victorian era London, the inhabitants of a family home with rented rooms upstairs fear the new lodger is Jack the Ripper.

Merle Oberonas Kitty Langley
Laird Cregaras Mr. Slade
George Sandersas Inspector John Warwick
Cedric Hardwickeas Robert Bonting
Sara Allgoodas Ellen Bonting
Aubrey Matheras Superintendent Sutherland
Queenie Leonardas Daisy the Maid
Doris Lloydas Jennie
David Clydeas Det. Sgt. Bates
Helena Pickardas Annie Rowley
Lucien Ballard