Dr. Elliott entered. Jack followed him. Close on their heels came Arkwright with an Inspector of Police, and a man who was apparently his assistant—in plain clothes.

“This is Inspector Baddeley, of the Sussex Constabulary,” said Arkwright. “I was lucky enough to find him at the station.” The Inspector assented.

“Good-morning, Sir Charles. Good-morning, gentlemen.”

“This is a bad business, Sir Charles,” declared Dr. Elliott. “It hardly seems credible that only yesterday this poor fellow....” He went to the body.

The Inspector followed him.

“Quite dead, gentlemen—hum—hum—been dead several hours.”

The Inspector carefully withdrew the dagger.

“Try that for any prints, Roper,” he muttered. “It’s just on the cards.”

“Yes, sir,” replied plain clothes; he at once got to work with the “insufflator.”

“Then photograph the body from both sides of the room.”