An Affair (original title 'En affære') is a 2018 Norwegian psychological thriller that explores the dangerous dynamics between teacher and student with unsettling precision. The film follows a newly appointed teacher who begins noticing she's being followed, only to discover the disturbing truth: one of her own students has developed a dangerous obsession with her. Director Henrik Martin Dahlsbakken crafts a tense atmosphere that gradually escalates from subtle unease to full-blown psychological terror.

The film's strength lies in its realistic portrayal of how professional boundaries can be violated and how quickly a situation can spiral out of control. The performances, particularly from the lead actress as the increasingly paranoid teacher, create a palpable sense of vulnerability and dread. At 92 minutes, the film maintains tight pacing that keeps viewers engaged as the stakes continue to rise.

While the IMDb rating of 5.4 suggests mixed reception, An Affair offers compelling viewing for fans of European psychological thrillers. The Norwegian setting adds a distinctive atmospheric quality, and the film raises thought-provoking questions about power dynamics, obsession, and personal safety. Watch this tense drama for its effective building of suspense and its exploration of a teacher's worst professional nightmare becoming reality.