“Yes, quite right,” said Thorndyke. “Come in. Your name is Wilkins, I think?”

“That’s me, sir,” said the voice; and in response to Thorndyke’s invitation, a typical “growler” cabman of the old school, complete even to imbricated cape and dangling badge, stalked into the room, and glancing round with a mixture of embarrassment and defiance, suddenly fixed on Polton’s nose a look of devouring curiosity.

“Here you are, then,” Polton remarked nervously.

“Yus,” replied the cabman in a slightly hostile tone. “Here I am. What am I wanted to do? And where’s this here Mr. Polton?”

“I am Mr. Polton,” replied our abashed assistant.