It was nearing the hour of six in the evening when five men made their appearance on the stretch of pavement on which Mr. Woodstock’s office door opened. They did not, however, arrive in a solid body, but in two groups—of two and three, respectively—which held no mutual communication, but kept within easy distance of one another. The larger group consisted of Dr. Thorndyke, Mr. Lambert, the lapidary, and a tall, powerful man of distinctly military appearance and bearing; the smaller group consisted of a uniformed inspector of the local police and Mr. Lambert’s assistant “Fred.”
“I hope our friends are punctual in coming out,” Thorndyke remarked as he stood with his two companions ostensibly inspecting the stock in a bookseller’s window. “If we have to wait about long, we are likely to att
