Further Chronicles of Norroy, Diplomatic Agent

Originally published in The Popular Magazine in November 1912,
As the fight against the opium trade goes on in China, a captain in the Imperial cavalry sends to a female friend, Holly Lea, in New York six jade plates, not knowing that they hold the secret to producing a potent form of opium known as Shandoo. Several different factions want those plates. One of them is Yorke Norroy.