"No!" replied the Inspector, firmly. "I shan't tell you. But I'll tell you this much--this Chang Li is wanted on a very serious charge as it is, and we may charge him with something much more serious. We've positive information that he's here--and I'm only giving you sound advice when I say that if he is here, you'll do well to show us where he is. Now, come, Mr. Pilmansey, is he here?" The elder Pilmansey shook his head--but the shake was more one of doubt than of denial. "I can't say," he answered. "He might be." "What's that mean?" demanded the Inspector. "Might be? Surely you know who's in your own house!" "No!" said the elder man, "I can't say. It's this way--we've a certain number of foreigners come here. There are few--just a few--Chinese and Japanese--medical students, you know. Now, some time ago--a couple of years ago--some of them asked us if we couldn't let them have three or four rooms at the top of the house in which to start a sort of little club of their own, so that they could have a place for their meetings, you understand. They were all quiet, very respectable young fellows--so we did. They have the top floor of this house. They furnished and fitted it up themselves. There's a separate entrance--at the side of the shop. Each of them has a latch-key of his own. So they can go in and out as they like--they never bother us. But, as a matter of fact, there are only four or five of them who are members now--the others have all left. That's the real truth--and I tell you I don't know if Mr. Chang Li might be up there or not. We know nothing about what they do in their rooms--they're only our tenants." "Let me ask you one question," said the Inspector, "Have either of you ever been in those rooms since you let them to these people!" "No!" answered the elder man. "Neither of us--at anytime!" "Then," commanded the Inspector, "I'll thank you to come up with us to them--now!" CHAPTER THIRTY-SEVEN CHANG LI Not without some grumbling as to waste of time and interference with business, the Pilmansey brothers led the way to a side door which opened into a passage that ran along the side of the shop and from whence a staircase rose to the upper regions of the house. The elder pointed, significantly, to the street door at the end. "You'll take notice that these young fellows I told you of get to the rooms we let them through that?" he observed. "That door's always locked--they all have latch-keys to it. They never come through the shop--we've nothing to do with them, and we don't know anything about whatever they may do in their rooms--all we're concerned with is that they pay their rent and behave themselves. And quiet enough they've always been--we've had no reason to complain." "And, as they all have latch-keys, I suppose they can get into the place at any hour of the day--or night?" suggested the Inspector. "There's no bar against them coming here at night?"