Baylor is not your typical thirteen year old. Baylor is a medium who can see and communicate with ghosts. This is a useful ability because his twin sister, Kristina, is a ghost. Kristina and Baylor have been working together to relay messages from other ghosts to their living loved ones for years with only a few problems (non-believers, insistent ghosts with embarrassing messages in odd locations, and irritating a great aunt), until a strange man in a sheet shows up. When this very unusual ghost appears, things get weird: Baylor gets pulled from the world of the living and Kristina disappears. Baylor doesn't know what to do - who do you go to when your ghost sister is missing? What does this new type of ghost mean? Could this be the first spirit that wants to do harm to Baylor?