Trent shook his head. "We can't build anything on that last consideration. I've gone into the subject with people who know. I shouldn't wonder," he added, "if the traditional notions about loss of temperature and rigor after death had occasionally brought an innocent man to the gallows, or near it. Dr. Stock has them all, I feel sure: most general practitioners of the older generation have. That Dr. Stock will make an ass of himself at the inquest is almost as certain as that to-morrow's sun will rise. I've seen him. He will say the body must have been dead about so long, because of the degree of coldness and _rigor mortis_. I can see him nosing it all out in some text-book that was out of date when he was a student. Listen, Murch, and I will tell you some facts which will be a great hindrance to you in your professional career. There are many things that may hasten or retard the cooling of the body. This one was lying in the long dewy grass on the shady side of the shed. As for rigidity, if Manderson died in a struggle, or laboring under sudden emotion, his corpse might stiffen practically instantaneously: there are dozens of cases noted, particularly in cases of injury to the skull, like this one. On the other hand, the stiffening might not have begun until eight or ten hours after death. You can't hang anybody on _rigor mortis_ nowadays, inspector, much as you may resent the limitation. No; what we _can_ say is this. If he had been shot after the hour at which the world begins to get up and go about its business, it would have been heard and very likely seen, too. In fact, we must reason--to begin with, at any rate--on the assumption that he wasn't shot at a time when people might be awake--it isn't done in these parts. Put that time at six-thirty A. M. Manderson went up to bed at eleven P. M. and Martin sat up till twelve-thirty. Assuming that he went to sleep at once on turning in, that leaves us something like six hours for the crime to be committed in; and that is a long time. But whenever it took place, I wish you would suggest a reason why Manderson, who was a fairly late riser, was up and dressed at or before six-thirty; and why neither Martin, who sleeps lightly, nor Bunner, nor his wife heard him moving about, or letting himself out of the house. He must have been careful. He must have crept about like a cat.... Do you feel as I do, Murch, about all this: that it is very, very strange and baffling?" "That's how it looks," agreed the inspector.