"Exactly," agreed the Duke. "I now know, that if you catch a man with his hand in your pocket, you eliminate everybody whose hands do not happen to be in your pocket, and by this process arrive at the culprit."
Mr. Nape looked a little dubious.
"My confidence in your ability being established," the Duke went on, "I wish you to accept a commission from me."
Mr. Nape regarded him with cold suspicion.
"It isn't by any chance connected with electric bells?" he asked sarcastically.
"Not at all."
"Or digging holes in a garden?"
The Duke shot a reproachful glance at him.
"As to that unfortunate incident," he said, "you have yourself to blame. But for the completeness of your disguise——"
"Which you penetrated," said Roderick gloomily.