Well, Watson, you have done all that a good friend could. You can now disappear from the scene.”

“I must wait and hear his opinion, Holmes.”

“Of course you must. But I have reasons to suppose that this opinion would be very much more frank and valuable if he imagines that we are alone. There is just room behind the head of my bed, Watson.”

“My dear Holmes!”

“I fear there is no alternative, Watson. The room does not lend itself to concealment, which is as well, as it is the less likely to arouse suspicion. But just there, Watson, I fancy that it could be done.” Suddenly he sat up with a rigid intentness upon his haggard face. “There are the wheels, Watson. Quick, man, if you love me!