Sherlock Holmes and the Adventure of the Blue Gem (On the Case with Holmes and Watson Series #3)

A hat, a goose, and a priceless blue gem...Can Sherlock Holmes add up the clues?
When countess's blue gem is stolen and winds up inside a goose, Sherlock Holmes and Dr. Watson jump on the case. But will they ever find the thief? Or is it just a wild goose chase?