After suffering a terrible accident Christine (Nicole Kidman) is left with no recollection of who she is. Each day she wakes, with no memory of her life including her husband Ben (Colin Firth). But before she goes to sleep, she recovers fragments from her past, flashbacks to the accident that damaged her. With the help of Dr Nash (Mark Strong), she attempts to piece together fragments that may help her recover some link to the past, and begin to uncover a terrifying new truth that forces her to question those closest to her. Based on the best-selling novel by SJ Watson, director Rowan Joffe weaves a terrifying tale of a woman that is struggling to piece together her life and find out who she can trust.