The boys raced through the darkening woods, the cool, damp, evening air invigorating as it swept past Jess’ muzzle.  He took the beck in a single bound. His brother, he knew, would need to meet it halfway, slowing him, giving Jess a further advantage. Sensing something, Jess glanced over his flank and knew, even before Alfie did, that he wasn’t going to make it. He began to turn—the roe…