Having lost her job and her husband, alcoholic Rachel Watson spends time aimlessly travelling on a train. She gets drawn into a web of intrigue when she becomes fascinated by a woman's disappearance. Rachel thinks she has vital evidence in cracking the case, but gaps in her memory cloud her judgment, and before long her own life is endangered. Thriller based on Paula Hawkins' novel, starring Emily Blunt, Rebecca Ferguson, Haley Bennett, Justin Theroux and Luke Evans.