The Mystery Of Mr. Wong-Starring Boris Karloff!

The Eye of the Daughter of the Moon, a golf ball sized sapphire has been stolen in China. It is quickly smuggled into the US. Richards, a wealthy man aware of the curse placed on the Eye by the Emperor Hong Chong Tu when he buried it in his dead, unfaithful wife's heart, expects to be murdered for receiving it. He shows Mr. Wong (Boris Karloff) the Eye with a death threat.