“Arrest him!” cried Peters.

“We know where to lay our hands on this gentleman if he is wanted,” said the sergeant majestically, “but you’ll have to go, Mr. Holmes.”

“Yes, Watson, we shall have to go.”

A minute later we were in the street once more. Holmes was as cool as ever, but I was hot with anger and humiliation. The sergeant had followed us.

“Sorry, Mr. Holmes, but that’s the law.”

“Exactly, Sergeant, you could not do otherwise.”

“I expect there was good reason for your presence there. If there is anything I can do⁠—”