"Yes, but he would have to explain how he burgled your house, and what business he had to get himself half murdered in your conservatory. Let us get out here and walk the rest of the way to your house. Our cabby knows quite enough about us without having definite views as to your address." The cabman was dismissed with a handsome _douceur_, and the twain turned off the front at the corner of Eastern Terrace. Late as it was, there were a few people lounging under the hospital wall, where there was a suggestion of activity about the building unusual at that time of the night. A rough-looking fellow, who seemed to have followed Bell and Steel from the front, dropped into a seat by the hospital gates and laid his head back as if utterly worn out. Just inside the gates a man was smoking a cigarette. "Halloa, Cross," David cried, "you are out late tonight!" "Heavy night," Cross responded, sleepily, "with half a score of accidents to finish with. Some of Palmer of Lingfield's private patients thrown off a coach and brought here in the ambulance. Unless I am greatly mistaken, that is Hatherly Bell with you." "The same," Bell said, cheerfully. "I recollect you in Edinburgh. So some of Palmer's patients have come to grief. Most of his special cases used to pass through my hands." "I've got one here to-night who recollects you perfectly well," said Cross. "He's got a dislocated shoulder, but otherwise he is doing well. Got a mania that he's a doctor who murdered a patient." "Electric light anything to do with the story?" Bell asked, eagerly. "That's the man. Seems to have a wonderfully brilliant intellect if you can only keep him off that topic. He spotted you in North Street yesterday, and seemed wonderfully disappointed to find you had nothing whatever to do with this institution." "If he is not asleep," Bell suggested, "and you have no objection--" Cross nodded and opened the gate. Before passing inside Bell took the rolled-up Rembrandt from his deep breast-pocket and handed it to David. "Take care of this for me," he whispered. "I'm going inside. I've dropped upon an old case that interested me very much years ago, and I'd like to see my patient again. See you in the morning, I expect. Good-night." David nodded in reply and went his way. It was intensely quiet and still now; the weary loafer at the outside hospital seat had disappeared. There was nobody to be seen anywhere as David placed his key in the latch and opened the door. Inside the hall-light was burning, and so was the shaded electric lamp in the conservatory. The study leading to the conservatory was in darkness. The effect of the light behind was artistic and pleasing. It was with a sense of comfort and relief that David fastened the door behind him. Without putting up the light in the study David laid the Rembrandt on his table, which was immediately below the window in his work-room. The night was hot; he pushed the top sash down liberally.