Sherlock Holmes and Dr Watson soon find themselve in a museum. The main display in the small museum is an artifact from the East. Confusing overlap of the various cultures and nations show up in this curiosity, a Jewish breast plate. .
Murder makes an appearance, and Holmes seems almost indifferent. The weapon is easily found out to be a poisoned needle hidden inside the breast plate.
As more details emerge, Holmes is already ahead of the game, and points out the real motive behind the killing, and why it was done.