The Adventure of the Blue Carbuncle

During Christmas time, Holmes and Watson investigate the mysterious appearance of a stolen gem found in a goose's crop, following a series of unexpected events involving a battered hat and a Christmas goose. Their investigation uncovers an intricate criminal plot that ultimately leads to the exoneration of an innocent man. This tale is one of Sir Arthur Conan Doyle’s classic Sherlock Holmes stories, first published in 1892.