I Saw The Devil Tagalog Dubbed Guide

Rather than turning the killer over to the police, Soo-hyun embarks on a sadistic quest for retribution. He tracks down Kyung-chul, beats him severely, and then lets him go—implanting a GPS tracker to follow him and repeat the cycle of torture. This "catch and release" game creates a terrifying dynamic where the hunter slowly becomes just as monstrous as the prey he pursues.