The Guest

A malevolent spirit infiltrates a Seoul parish, terrorizing its congregation with inexplicable violence and despair. When a young priest arrives to perform an exorcism, he uncovers a horror far more intricate than demonic possession. This Korean series fuses supernatural dread with psychological depth, peeling back layers of family trauma, institutional corruption, and the nature of evil itself. What begins as a straightforward haunting becomes a meditation on faith, guilt, and the darkness that lurks within the human soul.