An Affair (original title 'En affære') is a 2018 Norwegian psychological thriller that explores the dangerous boundaries between teacher and student relationships. The film follows a newly appointed teacher who begins noticing unsettling signs of being followed, only to discover that one of her own students has developed a dangerous obsession with her. What begins as subtle discomfort escalates into a tense psychological game that threatens both her professional standing and personal safety.

Director Henrik Martin Dahlsbakken crafts a deliberately paced thriller that relies on atmospheric tension rather than overt violence. The film's strength lies in its realistic portrayal of how ordinary situations can spiral into threatening scenarios. The lead performance effectively conveys the gradual erosion of security that comes with being stalked, while the student's portrayal avoids cartoonish villainy in favor of more nuanced psychological disturbance.

While the film's 5.4 IMDb rating suggests some narrative familiarity, An Affair offers compelling viewing for those interested in European psychological dramas. The Norwegian setting provides a distinctive backdrop, and the 92-minute runtime ensures the tension never overstays its welcome. Viewers should watch this film for its examination of power dynamics, its restrained approach to thriller conventions, and its insight into how obsession can manifest in seemingly controlled environments. The film serves as a cautionary tale about professional boundaries while delivering genuine moments of unease.