Viewers are captivated by 'I Saw the Devil,' praising its intense portrayal of vengeance and the exceptional performances, particularly by Choi Min-sik. The film's brutal and unflinching violence serves as a double-edged sword, enhancing the dark thematic exploration of revenge but also making it a challenging watch for some. The cinematography and direction are frequently lauded, contributing to a gripping, albeit sometimes predictably violent narrative.

👍 Exceptional acting and intense thematic depth

👎 Extremely graphic violence may disturb some viewers