Rachel takes the same commuter train every morning, fantasizing about the cozy suburban houses with their perfect couples all happy and content, nestled along the track. One morning she sees something and knows she has to tell the police. This story is told from three different female point of views, their lives all precariously entwined. Rachel is an alcoholic that binges and blackout. She has lost her job, her husband and has serious self esteem issues. Rachel is the "girl on the train" pretending to commute daily to London. Some readers have compared this title to Gone Girl, both trying to portray a dark side to domestic life, both have twisty suspenseful plots.