“Well, I can’t possibly leave you.”

“Yes, you can, Watson. And you will, for you have never failed to play the game. I am sure you will play it to the end. This man has come for his own purpose, but he may stay for mine.”

Holmes took out his notebook and scribbled a few lines. “Take a cab to Scotland Yard and give this to Youghal of the C. I. D. Come back with the police. The fellow’s arrest will follow.”

“I’ll do that with joy.”

“Before you return I may have just time enough to find out where the stone is.” He touched the bell. “I think we will go out through the bedroom. This second exit is exceedingly useful. I rather want to see my shark without his seeing me, and I have, as you will remember, my own way of doing it.”