I feel something behind me all the time—he's too afraid to turn; what else is moving in the dark?

“That’s it,” said he. “That’s the very trouble. We got to give this one up. We can’t ever tell the right time, and besides this kind of thing’s too awful, here this time of night with witches and ghosts a-fluttering around so. I feel as if something’s behind me all the time; and I’m afeard to turn around, becuz maybe there’s others in front a-waiting for a chance. I been creeping all over, ever since I got here.”