The Couple Who Vanished Into The CCTV Blind Spot
1. THE OPENING FILE: The Last Known Entry
Jeon Min-geun and Choi Sung-hee were a newlywed couple, married just six months before their sudden disappearance. Their last confirmed movements were captured by CCTV at their high-rise apartment in Busan:
- May 27, 10:00 PM: Choi Sung-hee, an actress, was seen returning home after a trip to the supermarket.
- May 28, 3:00 AM: Jeon Min-geun, a restaurant co-owner, returned from his shift.
They entered their 15th-floor apartment. They were never seen exiting the building again.
By May 31, family members, troubled by the silence, filed a missing person report.

2. THE CHILLING SCENE: The Untouched Life
Police analysis of the apartment confirmed no signs of a struggle, forced entry, or forensic anomaly like DNA or blood. The apartment was, as far as they could tell, pristine.
However, the domestic scene was deeply unsettling:
- The Groceries: The items Choi Sung-hee bought just hours before she vanished were left untouched on the kitchen table.
- The Chore Abandonment: Unwashed laundry, leftover food, and unmanaged food waste were all left exactly as they were.
- The Abandoned Pet: Choi Sung-hee doted on her dog, a pet that had recently undergone a major surgery. Yet, the dog was left alone, with feces scattered throughout the apartment and no food, suggesting the couple’s departure was not planned by the wife, or they intended to be gone for only a very short time.
The couple’s car was found, untouched, in the apartment parking lot. All CCTV footage—from entrances, the parking garage, and the lobby—was secured. None showed them leaving. The notion that they walked down 15 flights of stairs to avoid cameras was deemed “unconventional, if not impossible.”
**
3. THE GRAND DECEPTION: The Evasive Communication
The communications following May 28th only deepened the mystery:
File 3.1. The Stiff Apology
- May 30: Choi Sung-hee’s phone sent a text to her theater company. She apologized, claiming she was “hospitalized again after causing an accident like before,” referencing her history of severe depression and a past suicide attempt involving sleeping pills.
- The Actor’s Note: The company director found the message highly uncharacteristic. Choi Sung-hee was usually meticulous and reliable. More tellingly, the message used the stiff, formal ‘하십시오체’ (highly polite form), unlike her usual casual ‘해요체’ (familiar polite form).
File 3.2. The False Alibi
- May 31: Jeon Min-geun answered a call from the theater company, claiming his wife was hospitalized after a suicide attempt and was currently unreachable.
- The Trace: Location tracking placed Jeon Min-geun near their Busan home, but no emergency room in the vicinity had a record of Choi Sung-hee.
File 3.3. The Planned Absence
- May 29: Jeon Min-geun texted his business partner, saying he had a “matter that only I can resolve” and would be out of contact for “one to two months.”
- June 2: Jeon Min-geun sent a short, final text to his father: “I’m fine.”
File 3.4. The Final Pings
- June 2, 9:00 AM: Jeon Min-geun’s phone last pinged near a bus stop in Gijang-eup, Busan.
- June 2, 10:00 PM: Choi Sung-hee’s phone last pinged in Cheonho-dong, Seoul—the location of Jeon Min-geun’s biological mother.
UncutCore Analysis: The movement of the two phones 300 km apart on the same day, 10 hours separated, strongly suggests a deliberate attempt to create misleading timelines and locations, likely performed by a third-party accomplice.
4. THE COLD PARENTS AND THE UNCUT CORE ANALYSIS (USER HYPOTHESIS)
The family response was immediately split, fueling public suspicion:
| Choi Sung-hee’s Parents (親家) | Jeon Min-geun’s Parents (媤家) |
| Actively contacted media and police. | Exhibited extreme caution and reticence. |
| Mother was unaware of the initial report, filing her own days later. | Father initially reported, then his attitude dramatically changed. |
| They were told by the in-laws to “just wait, they will return.” | Parents later moved residence. |
The Father’s Chilling Quote
When pressed for an interview, Jeon Min-geun’s father—who eventually agreed to disclose his son’s image three years later—refused, stating:
“My daughter-in-law always wanted to go far away; perhaps she joined a temple. I must protect my son.“
This statement, prioritizing the protection of his son over finding his daughter-in-law, raised serious red flags.
The Staging Hypothesis (User Input)
The Case for Assisted Disappearance (Self-Staging): The evidence strongly supports the idea that the disappearance was meticulously planned, involving at least one accomplice.
- Motive: Escape from the severe, escalating harassment by the ex-girlfriend, Jang Mi-jin.
- Execution: The complex exit route suggests knowledge of the apartment’s architecture (either pre-scouted by Jeon Min-geun or provided by the accomplice).
- The Parental Role: Jeon Min-geun’s father and mother ( 친모) became unwilling, then active, accomplices. They assisted by moving the phones and protecting their son’s anonymity, believing he was simply hiding out, thus explaining their contradictory silence and his father’s need to “protect my son.”
The Contradiction (The Wife’s Intent): The core weakness of the self-staging theory is Choi Sung-hee’s abandoned dog, groceries, and lack of packed belongings. This suggests that if the couple did vanish together, Choi Sung-hee may have left unwillingly, believing she was only going out for a short time (perhaps to a hospital, as falsely claimed in the texts).
5. THE SHADOW OF THE EX: Jang Mi-jin (The Prime Suspect)
The most plausible theory of abduction/murder centers on Jang Mi-jin (pseudonym), Jeon Min-geun’s troubled former lover, who wielded immense influence over him.
The History of Obsession
Jeon Min-geun’s relationship with Jang Mi-jin was one of obsession and control, stretching back to high school.
- Jeon once carried a second burner phone solely to speak with Jang for hours.
- The marriage to Choi Sung-hee in 2015 occurred despite Jang’s continued interference.
- After Jang’s young daughter died in Norway (2015), her correspondence turned highly unstable, claiming she could “resurrect her daughter with freezing technology” and threatening Choi Sung-hee’s life, forcing the couple to hire wedding security and change numbers.
The Suspicious Movements
Jang’s actions at the time of the disappearance were those of a suspect preparing for a crime:
- She returned to Korea just before the couple vanished and left two weeks earlier than scheduled immediately after the disappearance.
- She made no contact with family or friends during her brief stay.
- She received 10 million KRW in cash, using only cash at motels and saunas to avoid a digital trail—consistent with funding a contract killing.
The Alternate Narrative (Jang’s Brother)
Jang Mi-jin’s brother provided a contradictory story, claiming Jeon Min-geun was the obsessive party, sending threats and once assaulting Jang at her apartment—suggesting the control dynamic was reversed or both were equally volatile.
The Legal Fiasco
- 2017: Jang Mi-jin was arrested in Norway under an INTERPOL Red Notice.
- 2019: The Norwegian court rejected South Korea’s extradition request due to a lack of direct evidence.
- The Scandal: The Korean Ministry of Justice allegedly missed the three-day window to appeal the decision, effectively allowing the prime suspect to remain free and unreachable.
The Final Stand: Jeon Min-geun’s biological mother later traveled all the way to Norway with a film crew, desperately seeking Jang Mi-jin (her former daughter-in-law and close confidante) in an attempt to get the truth. Jang refused to meet her, using the Norwegian police to issue a 48-hour restraining order against both the mother and the film crew, ensuring her silence and reinforcing the image of a suspect determined to stay hidden.
CORE Case File: The Ansan H-Officetel Mystery (2012)

