A valuable jewel known as the Blue Carbuncle was stolen from the jewel case of the Countess of Morcar yesterday.

A reward of £1,000 has been offered by the countess for information leading to the stone’s return …

While the police work to trace the missing diamond, Holmes attempts to reunite a Christmas dinner and its owner. But when the detective comes across the jewel, Holmes and Watson find themselves in a race against time to save an innocent man’s life.