Office

Office (오피스, 2015) is a South Korean thriller you can watch online on iFILM. Directed by Hong Won-chan: a sales manager murders his entire family, then walks back into work the next morning.

Detective Kim, played by Bae Sung-woo, investigates by working through the man's office. His colleagues are clearly concealing something — wrong answers, averted eyes, behaviour that doesn't match. Ko A-sung plays Mi-rae, an intern who knew the manager best and is the most unsettling person in the building. The open-plan floor becomes its own kind of crime scene.

Hong shoots the entire film under fluorescent office lighting and keeps it there. No relief, no exteriors that breathe. The horror is recognisable enough to work without anything supernatural. Stream Office online on iFILM.