“And that’s who I still declare she was!” rapped in Narkom, testily, “and what I’ll continue to say while there’s a breath left in me. I never actually saw the woman until that night, it is true, but Cleek told me she was Margot; and who should know better than he, when he was once her pal and partner? But it’s one of the infernal drawbacks of British justice that a crook’s word’s as good as an officer’s if it’s not refuted by actual proof. The woman brought a dozen witnesses to prove that she was a respectable Austrian lady on a visit to her son in England; that the motor in which she was riding broke down before that Roehampton house about an hour before our descent upon it, and that she had merely been invited to step in and wait while the repairs were being attended to by her chauffeur. Of course such a chauffeur was forthcoming when she was brought up before the magistrate; and a garage-keeper was produced to back up his statement; so that when the Mauravanian prisoner ‘confessed’ from the dock that what the lady said was true, that settled it. I couldn’t swear to her identity, and Cleek, who could, was gone—the Lord knows where; upon which the magistrate admitted the woman to bail and delivered her over to the custody of her solicitors pending my efforts to get somebody over from Paris to identify her. And no sooner is the vixen set at large than—presto!—away she goes, bag and baggage, out of the country, and not a man in England has seen hide nor hair of her since. Gad! if I could but have got word to Cleek at that time—just to put him on his guard against her. But I couldn’t. I’ve no more idea than a child where the man went—not one.”

“It’s pretty safe odds to lay one’s head against a brass farthing as to where the woman went, though, I reckon,” said Petrie, stroking his chin. “Bunked it back to Paris, I expect, sir, and made for her hole like any other fox. I hear them French ’tecs are as keen to get hold of her as we were, but she slips ’em like an eel. Can’t lay hands on her, and couldn’t swear to her identity if they did. Not one in a hundred of ’em’s ever seen her to be sure of her, I’m told.”

“No, not one. Even Cleek himself knows nothing of who and what she really is. He confessed that to me. Their knowledge of each other began when they threw in their lot together for the first time, and ceased when they parted. Yes, I suppose she did go back to Paris, Petrie—it would be her safest place; and there’d be rich pickings there for her and her crew just now. The city is en fête, you know.”

“Yes, sir. King Ulric of Mauravania is there as the guest of the Republic. Funny time for a king to go visiting another nation, sir, isn’t it, when there’s a revolution threatening in his own? Dunno much about the ways of kings, Superintendent, but if there was a row coming up in my house, you can bet all you’re worth I’d be mighty sure to stop at home.”

“Diplomacy, Petrie, diplomacy! he may be safer where he is. Rumours are afloat that Prince What’s-his-name, son and heir of the late Queen Karma, is not only still living, but has, during the present year, secretly visited Mauravania in person. I see by the papers that that ripping old royalist, Count Irma, is implicated in the revolutionary movement and that, by the king’s orders, he has been arrested and imprisoned in the Fort of Sulberga on a charge of sedition. Grand old johnny, that—I hope no harm comes to him. He was in England not so long ago. Came to consult Cleek about some business regarding a lost pearl, and I took no end of a fancy to him. Hope he pulls out all right; but if he doesn’t—oh, well, we can’t bother over other people’s troubles—we’ve got enough of our own just now with these mysterious murders going on, and the newspapers hammering the Yard day in and day out. Gad! how I wish I knew how to get hold of Cleek—how I wish I did!”

“Can’t you find somebody to put you on the lay, sir? some friend of his—somebody that’s seen him, or maybe heard from him since you have?”

“Oh, don’t talk rubbish!” snapped Narkom, with a short, derisive laugh. “Friends, indeed! What friends has he outside of myself? Who knows him any better than I know him—and what do I know of him, at that? Nothing—not where he comes from; not what his real name may be; not a living thing but that he chooses to call himself Hamilton Cleek and to fight in the interest of the law as strenuously as he once fought against it. And where will I find a man who has ‘seen’ him, as you suggest—or would know if he had seen him—when he has that amazing birth gift to fall back upon? You never saw his real face—never in all your life. I never saw it but twice, and even I—why, he might pass me in the street a dozen times a day and I’d never know him if I looked straight into his eyes. He’d come like a shot if he knew I wanted him—gad, yes! But he doesn’t; and there you are.”

Imagination was never one of Petrie’s strong points. His mind moved always along well-prepared grooves to time-honoured ends. It found one of those grooves and moved along it now.

“Why don’t you advertise for him, then?” he suggested. “Put a Personal in the morning papers, sir. Chap like that’s sure to read the news every day; and it’s bound to come to his notice sooner or later. Or if it doesn’t, why, people will get to knowing that the Yard’s lost him and get to talking about it and maybe he’ll learn of it that way.”

Narkom looked at him. The suggestion was so bald, so painfully ordinary and commonplace, that, heretofore, it had never occurred to him. To associate Cleek’s name with the banalities of the everyday Agony Column; to connect him with the appeals of the scullery and the methods of the raw amateur! The very outrageousness of the thing was its best passport to success.