"So you had abundant opportunity of observing him. Did he seem at all excited, flurried, did you notice anything unusual in his manner?"

"I didn't. He was just himself."

"Quite calm and normal?"

"Oh, quite!"

"Didn't give you the impression that he'd just been going through any particularly moving or trying episode—such as murdering a fellow-creature?"

"He didn't," replied Carstairs, without the ghost of a smile. "He was—just as usual."

"When did you see him next, after he went out to keep the appointment in Meadow Gate?"

"About half-past eight, or a little later."

"Where?"

"At the mortuary. He sent for me. I went to the mortuary, and found him there with Dr. Barber. They were making an examination of the dead man and wanted my help."