Two children living in different countries are visited nightly by a faceless being who wants to take possession of them. Clive Owen,Carice van Houten,Daniel Brühl,Pilar López de Ayala,Ella Purnell,Izán Corchero,Kerry Fox,Héctor Alterio,Adrian Rawlins,Michael Nardone,Mark Wingett,Peter O'Connor,Mary Woodvine,Lolita Chakrabarti,Ralph Ineson,Adam Leese,Raymond Waring,Ella Hunt,Imogen Gray,Natalia Rodríguez,Natasha Dosanjh,Hannah Cooper-Dean,Matthew Hodgkin,Christian Meinhardt,Craig Stevenson,Chris Wilson