The Mystery of the Missing 'Real Doll': Unanswered Questions Investigates the Dark Secrets of Murderer Jang Yoon-gi

By  Kang Sun-ae  | Jul 3, 2026

The Mystery of the Missing 'Real Doll': Unanswered Questions Investigates the Dark Secrets of Murderer Jang Yoon-gi
Unanswered Questions Jang Yoon-gi (Photo = Getty Images Korea)The brutal true face of Jang Yoon-gi, a murderer who took the life of an innocent high school girl on her way home, and the mysterious motives behind his crime are set to be unveiled.

The upcoming episode of SBS's Unanswered Questions, airing on the night of July 4, is titled "Real Dolls and the Fainting Game - What Was Murderer Jang Yoon-gi Hiding?" The episode will focus on the true nature of Jang Yoon-gi, the suspect in the murder of a high school girl that occurred in Wolgye-dong, Gwangju, this past May, and the bizarre traces found in his residence.

The incident began just after midnight on May 5, near a six-lane road in Wolgye-dong, Gwangju. A male high school student, who ran toward the scene after hearing desperate screams piercing the darkness, discovered a female student lying on the ground bleeding. However, just as the student was about to call for help, he was ambushed by an unidentified man who emerged from the darkness, resulting in secondary harm as the student sustained serious injuries.

The victim was rushed to the emergency room but ultimately passed away. The deceased was Lee Chae-won, only 17 years old. She had been brutally stabbed nine times in areas including her neck and chest while on her way home from studying.

The perpetrator, 23-year-old Jang Yoon-gi, who worked at a nearby restaurant, fled the scene but was later apprehended by police, and his identity was disclosed. During the investigation, he claimed that he had impulsively murdered Chae-won, whom he did not know, while attempting to take his own life due to pessimism about his personal circumstances. He insisted that he did not even know the victim was a female student and that the crime was not premeditated.

However, CCTV footage from before and after the crime and dashcam footage from a nearby truck, exclusively obtained and released for the first time by the Unanswered Questions production team, completely contradict his statement. In the footage, Jang Yoon-gi is seen persistently stalking Chae-won for 15 minutes before the crime. After committing the act in just 140 seconds (a little over two minutes), he engaged in a deceptive escape that was far from an attempt at suicide.

An even more shocking fact was discovered inside Jang Yoon-gi's studio apartment. According to prosecution officials, a 'real doll'—a life-sized female doll—was found during a search of his residence, with specific body parts cut out or severely damaged. However, despite the doll being clearly visible in police evidence footage, it mysteriously disappeared before the prosecution could formally seize it. This raises questions about why Jang Yoon-gi brutally damaged the doll and the background behind the disappearance of this evidence during the police investigation.

Although it has been revealed that Jang Yoon-gi had a prior criminal record of stalking and sexually assaulting another woman before this crime, he adamantly denies that there was any sexual motive in this murder case. Yet, it is reported that 'fainting game' was among the search terms on his mobile phone after the crime. What is his true motive for murdering the victim, and what secret was he trying to hide?

The analysis of the dashcam footage that dismantles the suspect's lie of an impulsive murder, the whereabouts of the missing real doll, and the truth behind the ugly secrets Jang Yoon-gi tried to hide will be revealed on Unanswered Questions, airing on Saturday, July 4, at 11:10 PM.
※ Please note: This article was translated by AI and may contain errors.