A 'Blue Carbuncle' is stolen from a hotel suite, and a former felon is soon arrested. However, an acquaintance of Holmes discovers the carbuncle in the throat of a Christmas goose. Holmes traces the owner of the goose, but soon determines that he was not the thief by offering him a replacement goose. The detective continues his search, first to an inn and then a dealer in Covent Garden. The dealer refuses to provide Holmes with information about the source of the goose, but Holmes observes another man trying to find the same information, and confronts him.