“If he waits a little longer he will get no price at all. The treaty will cease to be secret in a few months.”

“That is most important,” said Holmes. “Of course, it is a possible supposition that the thief has had a sudden illness⁠—”

“An attack of brain-fever, for example?” asked the statesman, flashing a swift glance at him.

“I did not say so,” said Holmes, imperturbably. “And now, Lord Holdhurst, we have already taken up too much of your valuable time, and we shall wish you good day.”

“Every success to your investigation, be the criminal who it may,” answered the nobleman, as he bowed us out the door.