Cảnh sát thiên tài truy vết tội phạm bằng ký ức - Review phim Hàn

T-John, a forensic expert from 2018, is mysteriously transported back to 1988 after being shot during a serial killer investigation. In the past, he becomes a police captain and uses his future knowledge to solve a series of complex crimes, including a \"red nail\" murder case, while uncovering painful truths about his own family and the corruption of the era.