"Of course, you'll stop payment of that cheque at the bank first thing tomorrow, gentlemen," he said. "Though that'll only be for form's sake, because I shall take charge of it when I go round to the police-station presently--they'll have got Burchill searched when I get there. Of course, I wasn't going to say anything up there, but Mrs. Engledew has been in with us at this, and she took Burchill and Dimambro in as beautifully as ever I saw it done in my life! Clever woman, that! We knew about her diamonds, gentlemen, within a few hours of the discovery of the murder, and of course, I thought Barthorpe had got them; I did, mistaken though I was! I didn't want anybody to know about those diamonds, though, and I kept it all dark until these fellows came on the scene. And, anyway, we didn't get the real culprit through the diamonds, either!" "That's what we want to know," said Selwood. "Have you got the real culprit? Are you certain? And how on earth did you get him--a man that none of us ever suspected!" "Just so!" answered Davidge with a grim laugh. "As nice and quiet-mannered a man as ever I entered as a candidate for the gallows! It's very often the case, gentlemen. Oh, yes--it's true enough! He's confessed--crumpled up like a bit of tissue paper when we took him--confessed everything to me just before I came along here. Of course we didn't get him through anything we've heard tonight; quite different line altogether, and a simple one." "We should like to know about it," said Cox-Raythwaite. "Can't you give us a mere outline?"