Mr. Murch laughed heartily. Trent's nonsense never made any sort of impression on his mind, but he took it as a mark of esteem, which indeed it was; so it never failed to please him. "Well, Mr. Trent," he said, "you're perfectly right. There's no point in denying it. I have got my eye on him. Not that there's anything definite; but you know, as well as I do, how often servants are mixed up in affairs of this kind, and this man is such a very quiet customer. You remember the case of Lord William Russell's valet, who went in as usual in the morning to draw up the blinds in his master's bedroom, as quiet and starchy as you please, a few hours after he had murdered him in his bed. I've talked to all the women of the house, and I don't believe there's a morsel of harm in one of them. But Martin's not so easy set aside. I don't like his manner; I believe he's hiding something. If so, I shall find it out." "Cease!" said Trent. "Drain not to its dregs the urn of bitter prophecy. Let us get back to facts. Have you, as a matter of evidence, anything at all to bring against Martin's story as he has told it to us?" "Nothing whatever at present. As for his suggestion that Manderson came in by way of the window after leaving Marlowe and the car, that's right enough, I should say. I questioned the servant who swept the room next morning, and she tells me there were gravelly marks near the window, on this plain drugget that goes round the carpet. And there's a footprint in this soft new gravel just outside." The inspector took a folding rule from his pocket and with it pointed out the traces. "One of the patent shoes Manderson was wearing that night exactly fits that print--you'll find them," he added, "on the top shelf in the bedroom, near the window-end, the only patents in the row. The girl who polished them in the morning picked them out for me." Trent bent down and studied the faint marks keenly. "Good!" he said. "You have covered a lot of ground, Murch, I must say. That was excellent about the whisky--you made your point finely. I felt inclined to shout 'Encore!' It's a thing that I shall have to think over."