The first trailer for Hunter Schafer's new horror flick 'Cuckoo' is here. The film stars Schafer as Gretchen, a teen who accepts a job from a man, played by Dan Stevens, at a resort in the German Alps. But she soon realizes that things there are not as they seem. Tilman Singer wrote and directed the movie that premiered at the Berlin International Film Festival in February and also screened at SXSW.