"Then came the discovery of the footprints to the pit where the body had been thrown, and those footprints were incontestably made by Penreath's boots. The stolen notes suggested a strong motive in the case of a man badly in need of money, and the payment of his bill with a Treasury note of the first issue suggested--though not very strongly--that he had given the servant one of the stolen notes. These were the main points in the circumstantial evidence against Penreath. The stories of the landlord of the inn, the deaf waiter, and the servant supported that theory in varying degrees, and afforded an additional ground for the credibility of the belief that Penreath was the murderer. The final and most convincing proof--Penreath's silence under the accusation--does not come into the narrative of events at this point, because he had not been arrested. "It was when we visited the murdered man's bedroom that the first doubts came to my mind as to the conclusiveness of the circumstantial evidence against Penreath. The theory was that Penreath, after murdering Mr. Glenthorpe, put the body on his shoulder, and carried it downstairs and up the rise to the pit. The murderer entered through the window--the bits of red mud adhering to the carpet prove that conclusively enough--but if Penreath was the murderer where had he got the umbrella with which he shielded himself from the storm? The fact that the murderer carried an umbrella is proved by the discovery of a small patch of umbrella silk which had got caught on a nail by the window. Again, why should a man, getting from one window to another, bother about using an umbrella for a journey of a few feet only? He would know that he could not use it when carrying the body to the pit, for that task would require both his hands. And what had Penreath done with the umbrella afterwards? "The clue of the umbrella silk, and the pool of water near the window where the murderer placed the umbrella after getting into the room, definitely fixed the time of the murder between eleven and 11.30 p.m., because the violent rainstorm on that night ceased at the latter hour. If Penreath was the murderer, he waited until the storm ceased before removing the body. There were no footprints outside the window where the murderer got in, because they were obliterated by the rain. On the other hand, the footsteps to the pit where the body was thrown were clear and distinct, proving conclusively that no rain fell after the murderer left the house with his burden. It seemed to me unlikely that a man after committing a murder would coolly sit down beside his victim and wait for the rain to cease before disposing of the body. His natural instinct would be to hide the evidence of his crime as quickly as possible.