He stood there tortured and puzzled, torn by fear, thrilled and stirred through every fiber of his anxious body. This was followed by a sense of terror, sub-conscious and wordless and irrational, the kind of terror that comes to a child in unknown places, in the dead of some unknown night.

"For the love of God, what is it?" his dry lips demanded, speaking aloud into the emptiness about him.

He waited, almost as if expecting some answering voice, as distinct and tangible as his own. But nothing broke the black silence that blanketed him in from the rest of all the world and all its living things. The sweat of agony came out on his face; his body hung forward, relaxed and expectant.

"What is it you want to say?" he repeated, in a hoarse and muffled scream, no longer able to endure that silent and nameless Something which surrounded him. "What is it you want to say?"

CHAPTER XXIV

THE GHOSTS OF THOUGHT

In the ensuing silence, as the unbroken seconds dragged themselves on, Durkin called himself a fool, and, struggling bitterly with that indeterminate uneasiness which possessed him, pulled himself together for some immediate and decisive action.

He could waste no more time, he told himself, in foolish spiritualistic seances with his own shadow. He had too much before him, and too short a time in which to do it. His troubles, when he came to face them, would be realities, and not a train of vapid and morbid self-vaporings.

He advanced further into the darkness of the room, slowly, with his hands outstretched before him. He would feel for the friendly support and guidance of the metal railing, and then grope his way onward. For as yet he had only carried the enemy's outposts. Then, for a second time, and for no outward reason, he came to a dead halt. He felt as if some elusive influence, some unnamable force, was holding and barring him back. Again he struck a match, recklessly, and again he saw nothing but the burnished metal railing and the dark mass of the vault.