There was a lot of hype surrounding this movie - from the cast down to its intensive marketing as the next 'Gone Girl'. The Girl on the Train mainly tells the story of Rachel, an alcoholic who commutes to the city every day. On her way to work, she always passes by a house where she envisions the couple living there to be the happiest of couples, just like she and her ex-husband were. It also happens that she used to live a few houses away from the couple, and her house is now occupied by her husband and his new wife.