Sasquatch Nightmare — Eric S. Brown

Robbie has been having nightmares. . . terrible, bloody dreams of a monster in the woods. That monster kills every night. Its bloodthirst never satiated. As bodies began to turn up in the real world, Robbie realizes his nightmares are more than they seem. Can Robbie and the local sheriff find and stop the monster or will the killings continue to grow in scope and number?