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 fixation on her. As the obsession escalates, the teacher's professional and personal life unravels in this tense Nordic drama.

Director Henrik Martin Dahlsbakken crafts a moody, atmospheric thriller that relies more on psychological tension than overt violence. The film's strength lies in its slow-burn approach to building suspense, with the Norwegian setting providing a stark, cold backdrop to the increasingly heated situation. While the IMDb rating of 5.4 suggests mixed reception, the film succeeds in creating genuine unease through its exploration of power dynamics and obsession.

Performances anchor the film's tension, particularly the lead actress who convincingly portrays the teacher's transition from confidence to vulnerability. The student's portrayal avoids caricature, instead presenting a nuanced depiction of dangerous fixation. For viewers interested in international thrillers or psychological dramas, An Affair offers a compelling watch that examines how quickly professional boundaries can collapse under pressure. The film's 92-minute runtime ensures a tight, focused narrative without unnecessary padding.