"Mandarin's Jade" has John Dalmas working for a man who will buy back a very expensive jade necklace. But the deal doesn't work as planned, Dalmas is sapped and Lindley Paul is murdered. Dalmas follows a lead, and there is another dead body. Next he meets the woman who lost the necklace, and a view into the lives of the rich and famous. A visit to a cheap bar produces more dead bodies. There is a shocking surprise ending to this story.