"Nine men out of ten would have got out of the house as soon as possible after the thing was done, but he was a cool hand and stayed. That made the whole thing look a deal more genuine than if he had unaccountably cleared out as soon as he had got his room nicely decorated. I expect the original capital for those Stock Exchange operations we heard of came out of those diamonds. He stayed as long as suited him, and left when he set up housekeeping with a view to his wedding. The rest of the story is pretty plain. You guess it, of course?" "Yes," I said, "I think I can guess the rest, in a general sort of way--except as to one or two points." "It's all plain--perfectly. See here! Challitt, in gaol, determines to get those diamonds when he comes out. To do that without being suspected it will be necessary to hire the room. But he knows that he won't be able to do that himself, because the landlady, of course, knows him, and won't have an ex-convict in the house. There is no help for it; he must have a confederate, and share the spoil. So he makes the acquaintance of another convict, who seems a likely man for the job, and whose sentence expires about the same time as his own. When they come out, he arranges the matter with this confederate, who is a well-mannered (and pretty well-known) housebreaker, and the latter calls at Mrs. Lamb's house to look for rooms. The very room itself happens to be to let, and of course it is taken, and Challitt (who is the invalid cousin) comes in at night muffled and unrecognisable. "The decoration on the panel does not alarm them, because, of course, they suppose it to have been done on the old panels and over the old paint. Challitt tries the spots where diamonds were left--there are none--there is no putty even. Perhaps, think they, the panels have been shifted and interchanged in the painting, so they set to work and split them all up as we have seen, getting more desperate as they go on. Finally they realize that they are done, and clear out, leaving Mrs. Lamb to mourn over their mischief. "They know that Kingscote is the man who has forestalled them, because Gillard (or Jones), in his chat with the landlady, has heard all about him and his painting of the panels. So the next night they set off for Finchley. They get into Kingscote's garden and watch him let Campbell out. While he is gone, Challitt quietly steps through the French window into the smoking-room, and waits for him, Gillard remaining outside.