CHAPTER X CONTAINS A CLUE

At once I knew that some startling incident had happened.

Dr. Sladen, called by the police, entered the room a few moments afterwards, whereupon I turned to him, and in order to allay any undue curiosity, said—

"My man has been taken ill, doctor. Exhaustion, I suppose. He's a great walker, and, unknown to me, has apparently been out for a night ramble."

"Ah, yes," answered the quiet, old-fashioned medical man, peering at the invalid through his glasses.

Slowly he took Rayner's pulse, and then said—

"Heart a little weak, I suppose. There's nothing really wrong—eh?"

"I think not. He was talking to me only a few moments ago, and then suddenly fainted. Been on a long ramble, I should think."

"At night, eh?" asked the doctor in some surprise.