After a long pause I resumed my meal, but with my ears still vigilant. Presently I heard something else, very faint and low. I sat as if frozen in my attitude. Though it was faint and low, it moved me more profoundly than all that I had hitherto heard of the abominations behind the wall. There was no mistake this time in the quality of the dim, broken sounds; no doubt at all of their source. For it was groaning, broken by sobs and gasps of anguish. It was no brute this time; it was a human being in torment!

As I realised this I rose, and in three steps had crossed the room, seized the handle of the door into the yard, and flung it open before me.

“Prendick, man! Stop!” cried Montgomery, intervening.