Which great god knows the detailed background of the real events in the Korean movie "That Guy's Voice"

One of the three unsolved cases in South Korea, the murderer has not been found so far, and all three cases have been put on the big screen.

199 1 year 65438+1October 29th, South Korea, Li Henghao, a 9-year-old boy who lives in Gangnam-gu, Seoul, didn't go home after school on Friday. At first, parents thought that the children would go in to play as usual when they passed the pavilion park, but they didn't wait until their son came back at 7 pm. Anxious parents finally determined that their son was missing after searching for the school all the way. The day after the alarm, they received a phone call from a mysterious person.

The mysterious man claimed to have kidnapped Li Henghao and demanded 200 million won. In the next 44 days, the mysterious man called his parents 87 times on 13 different phones, and constantly threatened and teased his heartbroken parents on the phone, ignoring that the police recorded all his calls.

1991March 13, the police found the child's body by the Han river. According to the autopsy results, Li Henghao was killed the day after his disappearance, and the cause of death was suffocation.

Three unsolved cases in Korea

1, Huacheng serial murder case

1986 ~ 199 1 occurred near huacheng county, gyeonggi province, south Korea. Nine consecutive women who came home at night were strangled after being sexually assaulted, and the lower part was stuffed with various foreign bodies. 1 female survived and escaped. All the dead were surrounded in Huacheng County, Gyeonggi Province, a village with a population of less than 600,000. At first, the local police thought it was just an ordinary case, but in fact it was the beginning of a series of murders. As the three unsolved cases in Korea, it is also an extremely complicated case.

2. The disappearance of frog boy

Frog boy refers to the incident that 199 1 five primary school students disappeared while catching frogs, and their bodies were found in September 2002 after1/year and six months. On March 26th, 199 1, the whole city had a day off because of the first local council election in 30 years. The last witness said that he had seen the child near Wolong Mountain, but he couldn't find it anywhere, but later this case became the most suspicious of the three unsolved cases in Korea.