Tween Sleuths Alex and Yasmeen have sworn off solving mysteries. But when Alex's baseball coach-dressed in his Uncle Sam getup-disappears into a Porta-Potty on Memorial Day, no one else can figure out what happened. There are clues, but they don't add up. Worse yet, the best ones seem to be hiding in bags of month-old trash! Do Alex and Yasmeen have the smarts-not to mention the stomach-to find the kidnapper?