No Mercy (2010) Korean Movie

In this gripping crime thriller, renowned pathologist Professor Kang Min Ho plans retirement for quality time with his daughter. However, a gruesome murder case involving a young woman pulls him back in. Partnering with rookie detective Min Seo Yeong, they suspect environmental activist Lee Sung Ho. Despite Lee’s confession, puzzling evidence confounds the police, pushing Kang to search for answers. When his daughter is kidnapped, a desperate father faces off against a cunning murderer, blurring the line between justice and vengeance in a tense showdown.

Native Title: 용서는 없다
Also Known As: Yongseoneun Eopda , Без пощады