There's something wrong next door. At least, that's what neighbors Howie Jeffries and Emily Phane both think. Since his daughter and wife moved out, Howie has been alone. Emily couldn't be more different: she's irreverent, outgoing and seemingly well-adjusted. But when Emily returns from college to care for her dying grandfather, Howie can't help but notice her increasingly erratic behavior. The thing is, although they've lived side by side since Emily was born, Howie and Emily have never so much as spoken. Both have their reasons: Howie is debilitatingly shy; Emily has been hiding the fact that she suffers from a nighttime affliction that makes her terrified to go to sleep, and question the very reality of her waking life. It is only when tragedy strikes that their worlds become joined in ways neither could ever have imagined.