hands, and as his eye fell on the stamped name in the corner he turned deadly pale.
"It looks like mine," he said huskily. "What do you say, Liz?" he added, passing it to his wife.
Mrs. Belfield examined first the name and then the hem. "It's yours, right enough, Frank," said she. "It's the one that got changed in the wash. You see, sir," she continued, addressing Thorndyke, "I bought him half-a-dozen new ones about six months ago, and I got a rubber stamp made and marked them all. Well, one day when I was looking over his things I noticed that one of his handkerchiefs had got no mark on it. I spoke to the laundress about it, but she couldn't explain it, so as the right one never came back, I marked the one that we got in exchange."
"How long ago was that?" asked Thorndyke.
"About two months ago I noticed it."
"And you know nothing more about it."
"Nothing whatever, sir. Nor you, Frank, do you?"
Her husband shook his head gloomily, and Thorndyke replaced the handkerchief in the drawer.
"And now," said he, "I am going to ask you a question on another subject. When you were at Holloway there was a warder—or assistant
