It's the spookiest night of the year and Honey Driver dresses up as Morticia Addams to go to the Halloween birthday party of one of her oldest friends at the Moss End Hotel. Alas, the party is a disaster - under-catered, overcrowded and full of other Morticias, including the hostess. Mr and Mrs Crook, the owners, are nowhere to be seen. Then the guests find they have been locked inside the hotel. Once the revellers manage to escape through the French windows, the Crooks are finally discovered. But they're in no condition to deal with complaints . . .