Moving across the country seems like the perfect chance to start over.In their isolated new neighborhood, Skye manages to fit in, but Deirdre withdraws from everyone, becoming fixated on the swampy woods behind their house and building monstrous sculptures out of sticks and bones.Then Deirdre disappears.And when something awful comes scratching at Skye's window in the middle of the night, claiming she's the only one who can save Deirdre, Skye knows she will stop at nothing to bring her sister home.

    Or perhaps it's only gathering itself for the coming weekend. As a massive storm dumps rain on the isolated campus, four other lonely students reveal themselves: Patrick, a handsome jock; Lisa, a manipulative tease; Cain, a brooding musician; and finally Martin, a scholarly eccentric. Each has forsaken a long weekend at home for their own secret reasons. The five unlikely companions establish a tentative rapport, but they soon become aware of a sixth presence disturbing the ominous silence that pervades the building. Are they the victims of a simple college prank taken way too far, or is the unusual energy evidence of something genuine---and intent on using the five students for its own terrifying ends? It's only Thursday afternoon, and they have three long days and dark nights before the rest of the world returns to find out what's become of them. But for now it's just the darkness keeping company with five students nobody wants and no one will miss.