Korean exclusive Blu-ray/Region A pressing. The 2-Disc Blu-ray Edition of I Saw the Devil includes both the Korean Theatrical Version and International Version of the film along with a boat load of extras. Relentlessly treading on the thin line between man and monster, I Saw the Devil takes the audience to dark and disturbing places in it's graphic depiction of the intense, gory battle that unfolds between an unhinged murderer and the man who becomes his match in his raging quest for revenge. The police have been hunting psychopathic serial killer Kyung Chul (Choi Min Sik) for a long time, but he slips away each time, leaving behind him a gruesome trail of blood. He has taken the lives of many in the cruelest possible ways, and his latest victim is the Fiancée of government agent Soo Hyun (Lee Byung Hun). Soo Hyun vows to avenge her death at all costs, but to catch the devil, he too must become a devil.