The Empty Raincoat Enigma. Jitter Jumpers, #31

Fifteen-year-old Xander likes control, and he finds it in the disciplined world of Tae Kwon Do. But his predictable life in the fog-shrouded town of Blackwood Creek is about to unravel. When a "spectral manifestation" known as the Empty Raincoat begins appearing in the shadows of the woods, Xander realizes he is being stalked by a plea from the past. To stop the haunting, he must dive into the town's darkest history and uncover a tragedy that everyone else has spent decades trying to forget.