“—So there it is, Parker,” said Lord Peter, pushing his coffee-cup aside and lighting his after-breakfast pipe; “you may find it leads you to something, though it don’t seem to get me any further with my bathroom problem. Did you do anything more at that after I left?”
“No; but I’ve been on the roof this morning.”
“The deuce you have—what an energetic devil you are! I say, Parker, I think this co-operative scheme is an uncommonly good one. It’s much easier to work on someone else’s job than one’s own—gives one that delightful feelin’ of interferin’ and bossin’ about, combined with the glorious sensation that another fellow is takin’ all one’s own work off one’s hands. You scratch my back and I’ll scratch yours, what? Did you find anything?”
“Not very much. I looked for any footmarks of course, but naturally, with all this rain, there wasn’t a sign. Of course, if this were a detective story, there’d have been a convenient shower exactly an hour before the crime and a beautiful set of marks which could only have come there between two and three in the morning, but this being real life in a London November, you might as well expect footprints in Niagara. I searched the roofs right along—and came to the jolly conclusion that any person in any blessed flat in the blessed row might have done it. All the staircases open on to the roof and the leads are quite flat; you can walk along as easy as along Shaftesbury Avenue. Still, I’ve got some evidence that the body did walk along there.”
“What’s that?”
Parker brought out his pocketbook and extracted a few shreds of material, which he laid before his friend.
“One was caught in the gutter just above Thipps’s bathroom window, another in a crack of the stone parapet just over it, and the rest came from the chimney-stack behind, where they had caught in an iron stanchion. What do you make of them?”
Lord Peter scrutinized them very carefully through his lens.
“Interesting,” he said, “damned interesting. Have you developed those plates, Bunter?” he added, as that discreet assistant came in with the post.
“Yes, my lord.”