There have been several sightings of a ghost in the Cathedral and attention turns to the Bishop who is called upon to perform an exorcism. The Bishop, however, decides to hunt out the ghost by performing an all-night vigil in the cloisters.

The Bishop's normal Thursday night game with Noote and the Archdeacon is thrown into chaos when the Dean arrives. Only three people are allowed to play the game but the Dean wants to play and he sends Noote on an errand. Noote has to persuade a young lady not to park in the close but, instead, he becomes enchanted with her and it looks as though the Dean has a regular place at the game after all...