"Well," said Ned, getting back into the room, "there are no finger marks anyhow."

"The body being found near the door certainly seems to be in favour of Mr. Rattar's opinion," observed the superintendent.

"I thought Mr. Rattar had formed no opinion yet," said Cromarty.

"No more I have," grunted the lawyer.

The superintendent looked a trifle perplexed.

"Before Mr. Cromarty had come in, sir, I understood you for to say everything pointed to the man having come in by the door and hit Sir Reginald on the head as he came to see who it was when he heard him outside."

"I merely suggested that," said Simon Rattar sharply. "It fits the facts, but there's no definite evidence yet."

Ned Cromarty had turned and was frowning out of the window. Now he wheeled quickly and exclaimed:

"If the murderer came in through the window while Sir Reginald was in the room, either the window was standing open or Sir Reginald opened it for him! Did Sir Reginald ever sit with his window open late at night at this time of year?"

"Never once, sir," said Bisset confidently. "He likit fresh air outside fine but never kept his windies open much unless the weather was vera propitious."