Basil hands Mrs. Richards her vase when his secret is discovered-the vase drops and is shattered. Sybil pays Mrs. Richards for her vase with Basil's winnings. Basil discovers a health inspector in his kitchen and gets a stern warning. Manuel has a pet rat called Basil in his room. Manuel's rat has escaped from the shed.
Basil discovers that the rat is loose in the hotel.
The staff manages to keep the rat's presence secret from the health inspector. The health inspector wants to have dinner in the hotel. Manuel and Basil discover the rat in the dining room. Manuel drags the fainted Basil out of the dining room. One specific peculiarity of the way Cleese and Booth use the midpoint is that it often serves to introduce a new complication.