"Nobody ever talks to strangers on the train. It's a rule. But what would happen if they did? Every day Iona, a larger-than-life magazine advice columnist, travels the ten stops from Hampton Court to Waterloo Station by train, accompanied by her dog, Lulu. Every day she sees the same people, whom she knows only by nickname: Impossibly-Pretty-Bookworm and Terribly-Lonely-Teenager. Of course, they never speak. Seasoned commuters never do. Then one morning,...

""The author of the smash bestseller, I Let You Go, propels readers into a dark and claustrophobic thriller, in which a normal, everyday woman becomes trapped in the confines of her normal, everyday world... Every morning and evening, Zoe Walker takes the same route to the train station, waits at a certain place on the platform, finds her favorite spot in the car, never suspecting that someone is watching her... It all starts with a classified ad....