Well, not exactly why the door was open; that could be explained easily enough. But why had he expected the door to be shut? He did not remember shutting it, but somehow he was surprised to see it open now, to see Cayley through the doorway, just coming into the room. Something working subconsciously in his brain had told him that it was surprising. Why?

He tucked the matter away in a corner of his mind for the moment; the answer would come to him later on. He had a wonderfully retentive mind. Everything which he saw or heard seemed to make its corresponding impression somewhere in his brain; often without his being conscious of it; and these photographic impressions were always there ready for him when he wished to develop them.

Cayley joined him at the window.

“I’ve telephoned,” he said. “They’re sending an inspector or someone from Middleston, and the local police and doctor from Stanton.” He shrugged his shoulders. “We’re in for it now.”