Summary
Highlights
Claire Peterson, a woman haunted by her husband Garett's infidelity, is urged by her best friend Vicky to sign divorce papers. While struggling with a jammed garage door, she meets her new neighbor, Noah, who is surprisingly mature and charismatic. Noah and Claire bond briefly, and he eventually joins her literature class at school.
With her son Kevin and estranged husband Garett away, Claire is alone. Noah, who previously expressed interest and flirted with her, calls her and asks for help making dinner. She goes to his house, and after a night of intimacy, Claire wakes up filled with regret. She tries to end things, but Noah becomes angry, punching the wall and showing a possessive side. She affirms it was a mistake and must never happen again.
Noah unexpectedly shows up at Claire's house, meeting Garett and causing Claire anxiety. Moments later, Noah manipulates the situation, suggesting Claire requested he join her advanced class through a hacked email. He then poisons Kevin's mind against his father, leading to a tense dinner where Kevin is rude to Garett.
Noah sends Claire flowers, making her believe they were from Garett, but she later realizes Noah sent them. She confronts him, accusing him of manipulating Kevin and hacking her email. Claire tries to distance herself from Noah, but fueled by jealousy, Noah causes a public scene at school, culminating in him being expelled for violent and inappropriate behavior. The next morning, Claire's classroom is plastered with intimate photos of her and Noah, horrifying her.
After a car incident involving Kevin and Garett, Claire suspects Noah's involvement. Noah then blackmails Claire with a video of their encounter, threatening to expose her if she doesn't comply. Claire confides in Vicky, who helps her break into Noah's house. There, Claire discovers a hidden room filled with pictures of her and evidence of Noah's tampering with Garett's car. She also finds photos of a 2006 minivan, leading to a detective's revelation that Noah caused his parents' deaths by tampering with his father's 2006 minivan after his father cheated on his mother.
Noah murders Vicky and lures Claire to Vicky's house. Claire finds Vicky's body and tries to escape, but Noah drags her to a barn where Garett and Kevin are tied up. Noah confesses to his past crimes and threatens Claire's family. In a desperate struggle, Claire wounds Noah with an EpiPen and then attacks his eyes. Kevin helps by hitting Noah with a wooden block. Claire ultimately activates a machine that crushes Noah, ending his reign of terror. Claire, Kevin, and a wounded Garett escape the burning barn, with Garett reassuring Claire about their future.