THE NUMBER ONE BESTSELLER. YOU DON'T KNOW HER. BUT SHE KNOWS YOU. Rear Window meets Gone Girl, in this exceptional and startling psychological thriller 'Gripping, enthralling - a top-notch thriller and a compulsive read' S J WATSON, bestselling author of Before I Go To Sleep Rachel catches the same commuter train every morning. She knows it will wait at the same signal each time, overlooking a row of back gardens. Sheâe(tm)s even started to feel like she knows the people who live in one of the houses. âe~Jess and Jasonâe(tm), she calls them. Their life âe" as she sees it âe" is perfect. If only Rachel could be that happy. And then she sees something shocking. Itâe(tm)s only a minute until the train moves on, but itâe(tm)s enough. Now everythingâe(tm)s changed. Now Rachel has a chance to become a part of the lives sheâe(tm)s only watched from afar. Now theyâe(tm)ll see; sheâe(tm)s much more than just the girl on the trainâe¦