Suddenly, just as he held his breath ready to leap forward and pounce upon her, and it looked as if nothing could save the fugitive, she did a very clever thing. She darted across a spot in the woods where the ground was covered with many running vines. She did this, but he was too earnest in the pursuit to notice danger. She led him on, and again his hand shot out almost over her shoulder, when he caught his moccasin in one of the vines, that was like so many yards of fine steel wire, and sprawled forward on his face, with a force that drove the breath from his body, and seemed to make the earth shake with the shock.