“Well, Mr. Holmes, it is difficult for me to refuse you anything, for you have been of use to the force once or twice in the past, and we owe you a good turn at Scotland Yard,” said Lestrade. “At the same time I must remain with my prisoner, and I am bound to warn him that anything he may say will appear in evidence against him.”

“I wish nothing better,” said our client. “All I ask is that you should hear and recognize the absolute truth.”

Lestrade looked at his watch. “I’ll give you half an hour,” said he.