Sudden came into the room a thing that made them start and their hearts quiver.

And what was it? A moonbeam.

Even so can this machine, the body, by the soul's action, be strung up to start and quiver. The sudden ray shot keen and pure into that shamble.

Its calm, cold, silvery soul traversed the apartment in a stream of no great volume, for the window was narrow.

After the first tremor Gerard whispered, “Courage, Denys! God's eye is on us even here.” And he fell upon his knees with his face turned towards the window.

Ay it was like a holy eye opening suddenly on human crime and human passions. Many a scene of blood and crime that pure cold eye had rested on; but on few more ghastly than this, where two men, with a lighted corpse between them, waited panting, to kill and be killed. Nor did the moonlight deaden that horrible corpse-light. If anything it added to its ghastliness: for the body sat at the edge of the moonbeam, which cut sharp across the shoulder and the ear, and seemed blue and ghastly and unnatural by the side of that lurid glow in which the face and eyes and teeth shone horribly. But Denys dared not look that way.

The moon drew a broad stripe of light across the door, and on that his eyes were glued. Presently he whispered, “Gerard!”

Gerard looked and raised his sword.

Acutely as they had listened, they had heard of late no sound on the stair. Yet therein the door-post, at the edge of the stream of moonlight, were the tips of the fingers of a hand.

The nails glistened.