Emily Blunt (Looper)
Haley Bennett (The Equalizer)
Rebecca Ferguson (Mission Impossible 5)
Justin Theroux (American Psycho)
Luke Evans (Dracula Untold)
Edgar Ramirez (Joy)
Laura Prepon (That 70s Show)
Allison Janney (Spy)
Lisa Kudrow (Bad Neighbours)
Rachel Watson (Emily Blunt) is an alcoholic who divorced her husband, Tom Watson (Justin Theroux), after catching him cheating on her with their real estate agent, Anna Boyd (Rebecca Ferguson). During their marriage, Rachel was prone to alcohol-induced blackouts during which she engaged in self-destructive behavior that she only later learned about from Tom, and to which she attributes the ending of their marriage, in addition to her being infertile. Rachel shares an apartment with her friend Cathy (Laura Prepon) and spends her days commuting on a train, often stalking Tom, Anna, and their newborn daughter Evie. During her trips, Rachel grows fascinated with Tom’s neighbors, Scott (Luke Evans) and Megan Hipwell (Haley Bennett), a young couple in what Rachel believes is a perfect marriage. In reality, Scott is aggressive and controlling, while Megan is detached, prone to dishonesty and sex addiction, and has frequent therapy sessions with her psychiatrist, Dr. Kamal Abdic (Édgar Ramírez).
While passing by the neighborhood one day, Rachel spots Megan kissing Kamal on her balcony and becomes infuriated by what she perceives as Megan’s ruining her “perfect” marriage. After a drinking binge, Rachel leaves the train to confront Megan, only to black out and awaken hours later at her apartment, injured. Rachel later finds out that Megan is missing and presumed dead, and is questioned by Detective Sergeant Riley (Allison Janney), who suspects Rachel might be involved due to her recent erratic behavior. Rachel, pretending to be a friend of Megan’s, approaches Scott and tells him about Megan’s affair. Scott identifies Kamal as Megan’s lover. Believing Kamal is behind Megan’s disappearance, Rachel schedules an appointment with him, wherein they discuss Rachel’s troubled relationship with Tom – particularly an incident in which she lashed out at an office party and aggravated Tom’s boss’s wife Martha (Lisa Kudrow), leading to Tom being fired.
At a bar, Rachel recognizes another commuter, who reveals that he saw her when she left the train the night that Megan disappeared. The commuter, heading home, later found Rachel unconscious in a tunnel, having been severely beaten by an unseen figure. Assuming she fell he offers his help, but she aggressively declined. Rachel returns to the tunnel and recalls seeing Megan with Tom and shouting at her before being ambushed. Meanwhile, Anna becomes suspicious of Tom after Sgt. Riley suggests that he is encouraging Rachel’s behavior by keeping in touch with her. Anna attempts to hack into Tom’s computer, and in the process she finds a secret phone with several voice messages to another woman Tom is having an affair with.
Megan is found dead and forensics determine she was pregnant, but the child was neither Scott’s nor Kamal’s. Scott becomes a suspect and confronts Rachel, believing she is conspiring against him, and in the process reveals he assaulted Megan prior to her death. Rachel runs into Martha and apologizes for her behavior at the party, only to discover she didn’t lash out or get Tom fired, but rather Tom was fired for having sexual relations with numerous co-workers. Rachel realizes Tom planted false memories in her head to account for his own abusive behavior. Anna identifies the woman Tom was exchanging phone calls with as Megan, and finds out Tom and Megan were having an affair. Rachel realizes Megan was pregnant with Tom’s baby and confided that to Kamal, leading to Rachel misinterpreting the nature of their encounter on the balcony. After leaving the train that day, Rachel caught Tom meeting with Megan and shouted at her, mistaking her for Anna. Tom then beat Rachel before returning to Megan, who announced she was keeping the baby. Realizing this would expose their affair, Tom murdered Megan.
Rachel goes to Tom’s house to warn Anna, but Anna reveals that she already knows about the affair. Tom arrives and Rachel confronts him. As Tom and Rachel argue Anna reveals she found Megan’s phone. Tom then carries out Evie, as a fearful Anna pleads for him to give her the baby while Rachel tries to dial 911. Tom takes the phone from Rachel and tells her to sit down. She begins to tell him how she now knows of all his wrong doings and false accusations. Tom then knocks Rachel unconscious as a flashback showing how he killed Megan plays. When Rachel regains consciousness, Tom tells her he wished she would have just stayed away for that one night. Rachel tries to run out of the house, grabbing a corkscrew on her way out. Tom catches up to her and attempts to strangle her, but she hits him with a lamp and tries to run again. Now outside the house, Tom catches up to Rachel, but this time she stabs him in the neck with the corkscrew as Anna watches from the window. Anna then exits the house and pushes the corkscrew deeper into Tom’s neck, finishing him off.
Rachel and Anna come to an understanding and separately confirm to the police that Rachel killed Tom in self-defense, after he revealed himself to be Megan’s killer. One year later, Rachel has become sober and found a new job, and while still commuting on the same train, she now sits on the opposite side in a different car, leaving her old neighborhood in the past.The Girl on the Train features a great lead performance from Emily Blunt and a solid supporting cast, Haley Bennett and Rebecca Ferguson jumping on the paranoia train with Emily Blunt to great effect. So, if you’re a fan of either mysteries or thrillers, The Girl on the Train will be a journey you want to go on.