South Korea’s notorious serial killer case from four years ago when one of its first-known killers terrorized the rural city of Hwaseong with 10 murders within four years, leading to one of the country’s largest manhunts. In Part One, a string of shocking murders begin, but it's not until five months later that police initiate a broad investigation and finally make an arrest – 22-year-old Sung-yeo Yoon is charged and sentenced for his crimes. In Part Two, Sung-yeo gives an account of his arrest and the police torture leading to his confession. The confession put him in prison for 20 years. However, with new forensic evidence uncovered in 2019 from a tip-off, the case becomes even more complex as Yoon's guilt is put into question.
Aired: Sep 18, 2021South Korea's most infamous serial murder investigation. With testimony from ...
