The Ghost Rider's Trail

The sun dips below the horizon, plunging the world into twilight. To the east, the sky begins to pale, signaling another night. You've been riding all afternoon, the tall grass swaying mighty and serene around you. Suddenly, your horse throws back its head, ears pricked, nostrils flaring. It's seen something – a campfire's dying embers, and nearby, a riderless horse, steam billowing from its mouth as it paces nervously.