"I suppose you were surprised to receive my message?" said Sir Savile. "The fact is, I've had an accident. I was coming downstairs this morning, when I fell and dislocated my shoulder. That being the case, I wired to you----"

"I shall be pleased to assist in any way I can," said Jim.

The specialist smiled. "You haven't got to assist, Mortimer--you've got to operate yourself."

"I, sir!" cried Jim.

"Yes, you! You're the best man in England after me, as I have reason to know. So, when I found myself out of the running, I sent for you. I shall direct you, and you will receive assistance from my colleagues, but the success or failure of the operation will rest entirely in your hands. If you succeed, you're a made man; if you fail----"

"I shall not fail," said Jim quietly.

"I know you won't, my boy," said Sir Savile; "for, if I had had any doubt of you, I shouldn't have sent for you ... and now we will go upstairs."

CHAPTER XXV.

IN THE SILENT HOUSE.

At six o'clock that night Jim Mortimer caught a train back to London. He had operated with complete success, and every evening paper in the country had published the reassuring bulletin which Sir Savile drew up after the satisfactory completion of Jim's task.