"Have you never heard of a 'priest's hole'?" he whispered. "In the days when Meudon Hall was built, no country house was without its hiding-place. Protestants and priests, Royalists and Republicans, they all used the secret burrow at one time or another."

"How did he get in?"

"That is what we are here to discover, and as I have no wish to destroy Mr. Ford's old oak panels I think our simplest plan will be to wait until he comes back again."

The shadows leaped upon us as Peace extinguished the light he carried. The great window alone was luminous with the faint starlight that showed the tracery of its ancient stonework; for the rest, the darkness hedged us about in impenetrable barriers. Side by side, we stood by the wall in which we knew the secret entrance must exist.

It may have been ten minutes or more when from the distance—somewhere below our feet, or so it seemed to me—there came the faint echo of a closing door. It was only in such cold silence that we could have heard it. The time ticked on. Suddenly, upon the black of the floor, there shone a thin reflection like the slash of a sword—a reflection that grew into a broad gush of light as the sliding panel in the wall, six feet from where we stood, rose to the full opening. There followed another pause, during which I could see Peace draw himself together as if for some unusual exertion.

A shadow darkened the reflection on the floor, and a head came peering out. The light but half displayed the face, but I could see that the teeth were bare and glistening, like those of a man in some deadly expectation. The next moment he stepped across the threshold. With a spring like the rush of a terrier, Addington Peace was upon him, driving him off his balance with the impact of the blow. Before I could reach them, the little detective had him down, though he still kicked viciously until I lent a hand. The click of the handcuffs on his wrist ended the matter.

It was Ford's valet, the man Jackson.

We were not long by ourselves. I heard a key turned in the lock, and Ransome burst out of his room into the corridor like an angry bull. Almost at the same moment there sounded a quick patter of naked feet from behind us, and Harbord, the secretary, came running up, swinging a heavy stick in his hand. They both stopped at the edge of the patch of light in which we were, staring from us to the gaping hole in the wall.

"What in thunder are you about?" cried the manager.

"Finding a solution to your problem," said the little detective, getting to his feet. "Perhaps, gentlemen, you will be good enough to follow me."