The garden had become a wilderness. The Duke and Simon followed the path as well as they could through a tangle of briars until they came at last to a big open space which must once have been one of the lawns.

It was freezing hard, and so still that the only sound was that of their own footsteps on the crisp snow. They mounted one terrace and then another. Suddenly the great, black bulk of the house loomed up before them in the faint starlight. As they came nearer they could see its gaunt outlines; through the blank upper windows patches of sky showed, where the roof should have been. The great facade was reminiscent of a miniature Versailles — the pile was splendid, even in its decay.

They mounted to the last terrace, with its broken stone balustrade, and flashed their torches on the walls. A long line of french windows, opening on to the terrace, stretched on either hand. De Richleau tried the nearest, but it was securely locked. The glass was gone, but it had been stoutly boarded over. They walked along to the left, inspecting each window as they went. All were the same, and each had loop-holes bored in the planking shoulder-high.

“Evidently the bandits Marie Lou spoke of fortified the place,” said the Duke, impatiently. “Let us try the other end.”

They turned, and in the other direction, at a short distance from where they had started, found a window that actually stood a few inches open. The silence was eerie, and Simon started nervously as the Duke swore softly. “What’s up,” he asked.

“I forgot to put my pistol back in my pocket after I’d cleaned it. It must be still in the cottage.”

“I lent mine to Rex,” whispered Simon. “In case anyone turned up while we were away!”

“No matter,” whispered back the Duke. “There is nothing to be frightened of here; that is,” he added, with a laugh under his breath, “unless the ghost of Prince Shulimoff has come back to do us the honours of his house.”

He pulled the window open as he spoke, and it yielded with a loud creak.

Simon had never felt such a strong desire to run away from something unseen and menacing; his ears felt as if they would burst with the intensity of listening; the house seemed to him an evil place, full of danger; he told himself that he was a fool. The Duke seemed quite unaffected, so he summoned up all his courage and followed him through the window.