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“After nagging”… Younger brother went on a trip with his girlfriend after killing his sister (‘Brave Detectives 4’)

HAN Hyunjung
Input : 
2025-09-13 14:37:33
Sent a self-made text saying, ‘Cancel the runaway report’
Photo I E Channel
Photo I E Channel

‘Brave Detectives 4’ revealed the true face of the criminals who killed the victim and staged a sham.

In the 51st episode of T-Cast E Channel’s ‘Brave Detectives 4’ (directed by Lee Ji-sun), which aired on the 12th, Detective Kim Jun-hang from the Jeju Western Police Station, Officer Lim Ik-soo from the Jeju Police Agency’s Security Information Division, and former Commissioner Yoon Wae-chul and Detective Kim Jin-soo from the Scientific Investigation Team (KCSI) appeared to unfold the investigation diary.

The first case introduced that day began with a report that the younger sister said, “My sister hasn’t contacted me for over ten days.” The missing person was a 40s skin care specialist, and the report was made at the suggestion of her sister’s colleague.

The sister’s boyfriend also lived in the house where the sisters resided, and the younger sister mentioned that her sister was struggling due to her boyfriend’s obsession and was contemplating a breakup. However, the boyfriend appeared nonchalant, saying, “I was just worried because she often stayed out.”

The investigation team tracked the missing person based on the statements of colleagues who had a drinking party just before her disappearance and CCTV footage. According to a colleague, they called the next day, but a man answered and hung up immediately. Upon confirmation, it was found that the missing person had moved separately with two colleagues after the drinking party. Later, a man wearing a beanie was captured on camera walking arm in arm with her. He was her boyfriend, Mr. Park (pseudonym). It turned out that the two had been dating for ten years, but Mr. Park had a wife and children.

The investigation team found traces of Mr. Park’s truck roaming around a deserted bridge and a cemetery on the morning of the disappearance. Bloodstains were found in the truck of the urgently arrested Mr. Park. After intense questioning, he confessed to the crime, stating that he had hidden the victim’s body under 20 bags of dirt beneath a bridge near his workplace. The cause of death was confirmed to be asphyxiation due to pressure, with signs of tearing and bruising all over the face and body, as well as a ruptured spleen.

Mr. Park stated that he hit the victim, who said, “I won’t go home,” because he was scared and afraid of being found out by her family. He also expressed anger, saying he felt disrespected when she didn’t move at his command. Notably, after killing the victim, he staged a facade by sending a text saying, “At least call me.” Mr. Park was sentenced to 25 years in prison.

The next case introduced by KCSI was complicated, as the prosecutor sought a life sentence while the victim’s family pleaded for leniency for the perpetrator. The case began when a body was discovered in a travel bag abandoned in an irrigation ditch. An autopsy revealed that the victim had over 30 stab wounds. Fingerprints painstakingly collected from the tips of the fingers confirmed that the victim was a woman in her 30s living an hour and a half away from where the body was found.

The investigation team discovered that a runaway report filed in the victim’s name was suddenly canceled 20 days before the body was found. This was because the victim had been texting her younger brother, asking him to cancel the missing person report. According to the younger brother, the sister disappeared after saying she was going to visit her boyfriend’s parents and only contacted him through messages.

However, the investigation team had placed the younger brother on the suspect list based on his statements in the runaway report. In fact, the younger brother interfered with the investigation into his sister’s disappearance and sent manipulated texts pretending to be her, urging the cancellation of the runaway report. Records showed that he had visited the location where the body was found twice, and mobile phone forensics revealed evidence of the crime.

The younger brother stated that he killed his sister during an argument after she nagged him. He placed the body on the rooftop of an apartment and transferred money from his sister’s bank account to his own, and even went on a trip with his girlfriend on Christmas Eve, using a loan in his sister’s name to buy game items and gifts for his girlfriend.

Although he disposed of the body in an irrigation ditch near a relative’s house where few people passed by, as the weather warmed and the water temperature rose, the decaying body floated to the surface. The court sentenced him to 30 years in prison.

Meanwhile, ‘Brave Detectives’ received a certificate of appreciation from the National Police Agency for its practical contributions to crime prevention. On the 14th, the National Police Agency acknowledged that ‘Brave Detectives’ understood and actively cooperated with police activities, contributing to the safe daily lives of citizens, and presented a certificate of appreciation to the production team.

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