Erotic psychodrama directed by Atom Egoyan, based on Anne Fontaine's 2003 film 'Nathalie'. Amanda Seyfried stars as Chloe, a young prostitute who is hired by gynaecologist Catherine (Julianne Moore) to test the loyalty of her husband David (Liam Neeson), whom she suspects of infidelity. Desire and jealousy intermingle as Chloe becomes increasingly involved in Catherine's life, setting her sights beyond David and onto the couple's wayward teenage son, Michael (Max Thierot).