In this psychological thriller, the story revolves around a troubled woman who becomes entangled in a missing persons investigation that promises to send shockwaves throughout her life. As she rides the train every day, she fantasizes about the seemingly perfect couple she sees from her window, until one day she witnesses something shocking in their backyard. Her decision to report it to the authorities leads her down a dark path of intrigue, as she struggles to piece together her fragmented memories and the tangled web of lies, deceit, and complicated relationships that surround the case. Her involvement becomes increasingly dangerous as she tries to prove not only what she saw, but also her own worth and sanity.

The 3664th greatest book of all time