“No Mercy” is a gripping South Korean crime thriller directed by Kim Hyeong-jun. The film centers around a forensic pathologist named Kang Min-ho, played by Sol Kyung-gu, who is on the verge of retirement. However, when a female environmental activist is brutally murdered, and her body is found in a shocking state, he is drawn back into the field to solve the case. The prime suspect, Lee Sung-ho, portrayed by Ryoo Seung-bum, challenges Kang with a twisted game of cat and mouse, revealing that the forensic scientist’s daughter has been kidnapped. The film delves deep into the moral dilemmas faced by Kang as he is forced to bend his principles to save his daughter, providing a tense and emotionally charged narrative that keeps the audience on edge until the very end.