A spooky stand-alone middle-grade novel from Dan Poblocki, perfect for fans of John Bellairs and Mary Downing Hahn.They say if you see him, it's already too late.Claire doesn't believe in ghosts, even though her dad is a ghost hunter on TV. But then her dad disappears. And a strange boy in her class, Lucas, knows something about ghosts. One of them has a message for her: Her dad has been taken, and he's in grave danger.Together, Claire and...