A new opium ring was flooding the country with all the misery, vice, and murder that go with the illicit traffic in drugs. How could Dr. Zellermann, the Park Avenue psychiatrist, be linked with the distribution of the dope? What did New York's bawdiest rendezvous for seamen, Cookie's Canteen, have to do with it? And where did 903 Bubbling Well Road, Shanghai enter the picture? It was the business of Simon Templar (The Saint) to find the answers to these questions. It was his job to track down and bring to justice the "top brass" of the criminal organization that made these connections profitable. But, the Saint was sick — love-sick. He had been so ever since he first laid eyes on lovely Avalon Dexter. She was utterly desirable; her laughter was like "bells at twilight"; and honesty seemed to look out of her eyes! The Saint "had it bad." Most important, Avalon was in a position to help him immeasurably with his mission. However, she might be one of the international gang he had vowed to smash! Templar had to be sure. His life was at stake!