"Sorry!" he said. "I see I've got to tell you something, Professor. You think I'm merely the geologist of this expedition, but in fact I'm a secret service man from Washington, on the trail of the biggest diamond-smuggling plot in history—and here is where the trail ends!"


rofessor Prescott's astonishment at these words was profound. He stood there blinking up at Stoddard, scarcely believing he had heard aright.

"You—you say you are—?"

"A detective, if you want. Anyway, if you've read the papers, you must know that for the past year or more the diamond markets of the world have been flooded with singularly perfect stones."

"Yes, I recall reading about that. They were thought to be synthetic, were they not?"

"By certain imaginative newspaper reporters, not by the experts, for under the microscope they revealed the invariable characteristics of diamonds formed by nature—the tiny flaws and imperfections no artificial means could duplicate."

"But didn't I read something, too, about some anonymous Indian rajah who was thought to be raising money by disposing of his jewels?"

"More newspaper rubbish! For one thing, British secret service men traced the rumor down and satisfied themselves there wasn't a rajah in India unloading any diamonds. For another; no rajah could possibly have the wealth involved. Why, do you know that since this plot unfolded, over five million carats' worth have made their appearance—and that means something like a billion dollars."