Very faint and shrill it was, and far behind him, when first he heard it; but somehow it made him hurry forward. Then, still very faint and shrill, it sounded far ahead of him, and made him hesitate and want to go back. As he halted in indecision it broke out on either side, and seemed to be caught up and passed on throughout the whole length of the wood to its farthest limit. They were up and alert and ready, evidently, whoever they were! And he⁠—he was alone, and unarmed, and far from any help; and the night was closing in.

Then the pattering began.