People are usually unaware that when Hammer Films were originally making films under their earlier name Exclusive they already produced a number of films that qualified as fantasy and horror.

One of these was 'Room to Let' - based on a radio play by Margery Allingham - which featured the further exploits of a killer explicitly identified as Jack the Ripper (identifiable according to witnesses by his distinctively laboured breathing, but which the audience never actually hears) updated fifteen years later to the Edwardian era in a subject to which Hammer would return twenty years later with a far more graphic version entitled 'Hands of the Ripper'.