["I will take away your most precious thing" - Jeju middle school student son murder case] In July 2021, a cold body was found in a small village adjacent to the beach in Jeju. The victim who was strangled to death with his nose and mouth covered with tape was the late Lee Ji-hoon (pseudonym), a 16-year-old middle school student. According to the neighbors, Lee Ji-hoon (pseudonym) was a kind and polite child, to the point of saying "hello 10 times a day if you meet 10 times a day." was contained The culprits were Baek Kwang-seok (48 years old at the time) and his acquaintance Kim Si-nam (46 years old at the time), who had a common-law relationship with Lee Ji-hoon's (pseudonym) mother! When Baek Kwang-seok's persistent obsession and violence led Lee Ji-hoon's (pseudonym) mother to end her common-law relationship, a terrifying threat and assault began... Eventually, she committed a terrible crime against her son! A brutal murder case committed by two adults against a young middle school student! Together with Bang Cheol, head of the Psychological Analysis Department of the Scientific Investigation Department of the Supreme Prosecutor's Office, and other experts, we dig into the truth of the day.