The Chaser movie (2008)

Ex-detective pimp Jeong Ho is angry because his girls keep disappearing without clearing their debts. One night, he gets a call from a customer and sends Mi Jin. But when Mi Jin meets the customer, Jeong Ho realizes the phone number of the customer matches that of the calls the missing girls got last. As something smells fishy, he searches for her. During his search, Jeong Ho dents a car in the alley. When Jeong Ho spots blood splattered on the driver’s shirt, he senses the man, Young Min, is the suspect. After an intense chase, Jeong Ho finally catches Young Min. But because of Jeong Ho’s pretense as a cop, they are both taken to the police station. At the station, he bluntly tells the policemen that he has killed the missing women, and the last girl, Mi Jin, may still be alive. As the police force is obsessed with a random search for corpses, Jeong Ho is the only one who believes Mi Jin is still alive. With only 12 hours left to detain the serial killer without a warrant, Jeong Ho’s hunt begins.