The Duke smiled; the Queen Bess flagon had never been at Belleville Castle, and it was now in a small locked cabinet which stood on the mantelpiece. He made no remark; a suspicion had begun to take shape in his mind concerning this strange visitor. Two thousand seven hundred and forty guineas was the price that he had paid for the Queen Bess flagon; all the other specimens in the little room, taken together, might be worth perhaps a quarter as much.

“Your Grace spoke of some other matter in which I might assist you?” he suggested, for the young man seemed to have fallen into a reverie.

“Why, yes. As I tell you, I expect a friend; and it looks very absurd to have no servant. You’re sure to find a suit of dress clothes in my bedroom. Pray put them on and represent my valet. You can resume your uniform afterwards.”

The Duke bowed and left the room. The moment the door closed behind him he made the best of his way to the kitchen. A few words were enough to impart his suspicions to the policeman. A daring and ingenious scheme was evidently on foot, its object being the theft of the Queen Bess flagon. Even now, unless they acted quickly, the young man might lay hands on the cabinet in which the treasure lay and be off with it. In a trice the Duke had discarded the police uniform, its rightful owner had resumed it, and the Duke was again in the convenient black suit which befits any man, be he duke or valet. Then the kitchen window was cautiously opened, and the policeman crawled silently round to the front of the house; here he lay in waiting for a summons or for the appearance of a visitor. The Duke returned immediately to the sitting-room.

On entering, he perceived the young man standing in front of the locked cabinet, and regarding it with a melancholy air. The Duke’s appearance roused him, and he glanced with visible surprise at the distinguished and aristocratic figure which the supposed policeman presented. But he made no comment and his first words were about the flagon.

“Now I come to remember,” said he, “I put the Queen Bess flagon in this cabinet. It must be so, although, as I have left my key at my rooms in St James’s Street, I can’t satisfy myself on the point.”

The Duke, now perfectly convinced of the character of his visitor, waited only to see him lay his hands on the cabinet. Such an action would be the signal for his instant arrest. But before the young man had time either to speak again or to put out his hand towards the cabinet, there came the sound of wheels quickly approaching the villa. A moment later a neat brougham rolled up to the door. The young man darted to the window, tore open the shutters, and looked out. The Duke, suspecting the arrival of confederates, turned towards the cabinet and took his stand in front of it.

“Go and open the door,” ordered the young man, turning round. “Don’t keep the lady waiting outside at this time of night.”

Curiosity conquered prudence; the Duke set more value on a night’s amusement than on the Queen Bess flagon. He went obediently and opened the door of the villa. On the step stood a young and very handsome girl. Great agitation was evident in her manner.

“Is—is the Duke here?” she asked.