Publisher's blurb: In this volume, camp-goers at Camp Ch-Yo-Ca have seen mysterious things in the middle of the night. The camp brings in Phil Robertson and his grandson John Luke to investigate the strange happenings. This adventure allows the reader to be Phil while checking out the mystery. Is there really a ghost behind the spooky sights and sounds? Or could it be something far different? Follow the trail of clues to try to find the answer. But avoid making the wrong choices and ending up in trouble!