"But What a Sweet Little Room" is the thirteenth episode of the 1969 ITC British television series Randall and Hopkirk (Deceased) starring Mike Pratt, Kenneth Cope and Annette Andre.

When she too is killed he is led to the regular meetings of a medium, Madame Hanska, and uses Jeannie as a decoy to foil a thieving operation in which a gang of three middle-class men murder and rob rich middle-aged widows by taking them on an apparently innocent excursion to a cottage in the county.

To the fake medium's extreme surprise he is then able to materialise as a ghost in front of her (the first real ghost she has ever seen in her long career) and gets her to confess to receiving money from the gang of three middle-class men in return for setting up séances at which they target wealthy widows and lure them to their deaths.

She shows a genuine sense of fear and remorse over her wrongdoing when confronted by Marty the ghost.

Only later on in the episode does it become clear why such a bizarre and elaborate means of murdering the widows has been constructed by the scriptwriters when Jeff is also nearly gassed to death in the same room only to be saved at the last moment with Marty's usual spiritual assistance.