Koryo Crime Podcast

Koryo Crime Podcast


Episode 5: Koh Yu Jeong

In this episode Kait and Ashley talk about Koh Yu Jeong, a woman who was convicted of killing her ex-husband Kang Mo on a trip where he saw their son for the first time in two years since their divorce.

<Koh Yu Jeong 고유정>

<Hong Tae Eui 홍태의 Koh Yu Jeong’s 2nd husband>

<Graphic showing Koh Yu Jeong’s movements and suspect activities>

<Pension (Vacation Rental) seen by a security camera from another building>

<CCTV of Koh Yu Jeong purchasing cleaning supplies>

<Koh Yu Jeong dragging a suitcase.>

<Koh Yu Jeong Arrested>


1) Koh faces life in prison for murder of ex-husband on Jeju
By Park Han-na Published : Nov 5, 2020 – 15:54 Updated : Nov 5, 2020 – 19:08


2) Appellate court affirms life sentence for woman in murder of ex-husband
16:29 July 15, 2020

3) Supreme Court confirms life imprisonment for woman in murder of ex-husband
Posted : 2020-11-05 14:04 Updated : 2020-11-05 17:21 (Korea Times)

4) Google term: 고유정

5) The Innocent Faced Killer: Koh Yu Jeong
Bedtime Crime Posted: Jan 26, 2022

6) 이지수 (2019년 9월 27일). “’질식사’ 검색했던 고유정…”의붓아들 살해” 결론”. MBC. 2023년 06월 19일에 확인함

7) SBS- 그것이 알고싶다 1178회 그것이 알고싶다
아내의 비밀과 거짓말 – 고유정은 왜 살인범이 되었나?
방송일: 2019.07.27(토)


8) Timeline of Jeju ex-husband murder case
By Choi Ji-won
Published : Jun 12, 2019 – 14:00 Updated : Jun 12, 2019 – 14:27



9) The Jeju Ex-Husband Murder Case—Murdered and Disposed By His Ex-Wife


10) Who is murder suspect Koh Yu-jeong?
By: Kim Arin
Published : Jun 20, 2019 – 16:51 Updated : Jun 22, 2019 – 12:25


11) 고유정 Koh Yu Jeong
최근 수정 시각: 2023-07-21 01:05:33

12) [일지] 고유정, 전 남편 살해부터 대법 무기징역 확정까지 {[Diary] Ko Yu-jeong, from the murder of her ex-husband to the decision of life imprisonment in the Supreme Court}
By: 양영전 기자 Newsis
입력 2020.11.05. 오후 3:27 수정2020.11.05. 오후 3:28


Episode 4: Korean Air Flight 007

We are back! In this episode, Ashley and Kait talk about the Korean Air Flight 007 that was shot down by the USSR on September 1st, 1983. This episodes gives a little background on the incident, some aviation aspects as well as some international law aspects of the disaster.


<Original flight path v.s. actual flight path.>


<Korean Air Flight 007>


<Boeing RC-135- plane that shot down KAL 007>

<Larry McDonald- A U.S. Congressman that was aboard KAL 007>


Abbott, Kenneth W., Robert O. Keohane, Andrew Moravcsik, Anne-Marie Slaughter, and Duncan Snidal. “The Concept of Legalization.” International Organization 54, no. 3 (2000): 401–19. https://doi.org/10.1162/002081800551271.

American Heritage® Dictionary of the English Language, Fifth Edition. S.v. “international law.” Retrieved March 27 2023 from https://www.thefreedictionary.com/international+law
Hassan, Farooq. “The Shooting down of Korean Airlines Flight 007 by the USSR and the Future of Air Safety for Passengers.” The International and Comparative Law Quarterly 33, no. 3 (1984): 712–25. http://www.jstor.org/stable/759165.

“International Law.” Wikipedia. Wikimedia Foundation, March 21, 2023. https://en.wikipedia.org/wiki/International_law.

“Korean Air Lines Flight 007.” Wikipedia. Wikimedia Foundation, March 26, 2023. https://en.wikipedia.org/wiki/Korean_Air_Lines_Flight_007.

Slomanson, William. Essay. In Fundamental Perspectives on International Law, 4. Boston, MA: Wadsworth Cengage Learning, 2011.


Guest co-host

Episode 3: Unsolved and Mysterious Deaths Episode 1

In this episode, Kait and her guest co-host Ashley discuss three cases.  

Case #1

Case #1 is the unsolved Namyangju Apartment Murder in which an elderly woman was murdered in her own home while her husband was out of the house. There is no CCTV footage and it is still an unsolved case to this day. 

<apartment building>

<an example of a wall pad>











<red line: path of murder>

<gold  line: bathroom slippers blood trail>

Case #2

Case #2 is about the unsolved disappearance of the Busan Newlywed Couple. Both returned home at different times but were caught on CCTV from their elevator going up to their apartment but were never seen leaving their apartment. Friends received suspicious texts from the pair that didn’t sound like themselves and family quickly became worried when they stopped hearing from them. When police visited the apartment, they found their dog, which the wife cherished deeply at home by himself and became concerned. Their phones were found far apart and the couple still have not been found to this day.

<CCTV of wife and husband in elevator>

<text messages sent from wife’s phone>

<Distance between husband’s,  (blue dot)and wife’s(green dot) phones>

*red dot is where their apartment is

*husbands name is an alias in picture.

Case #3

Case #3 is about the death of the Hangang University Medical student, Son Jung-min who was found in the Han River after a night of drinking with his friend in Banpo Park. His friend woke up around 3 AM to find his friend gone and thought he went home, so he left, accidently taking his friends phone with him. He notified his friend’s parents after realizing he hasn’t heard from him and later police found him in the river. It was later confirmed his death was caused by drowning. The mystery in this episode is about what exactly happened that night as Son’s father claims his son was afraid of the water. 

<Banpo Riverside Park>

<Condition of friend’s shoes in convenience store> 

<CCTV footage of Son and friend>


나무위키Namuwiki. n.d. 남양주 아파트 밀실 살인사건 [Namyangju Apartment Closet Murder Case]. [online] Available at: <https://namu.wiki/w/남양주%20아파트%20밀실%20살인사건&gt; [Accessed 19 April 2022].

Cunha, J., 2021. Newlyweds missing case, unsolved disappearance in Busan – Caso Criminal. [online] Caso Criminal. Available at: <https://casocriminal.org/en/asian-cases/busan-newlyweds-missing-case-unsolved-disappearance/&gt; [Accessed 27 April 2022].

G,I. (근이), 2022. “[No.278 미스터리] 범인은 있지만 누군지 모른다> 남양주 아파트 밀실 살인 사건 [No.278 Mystery There is a culprit but we don’t know who it is Namyangju Apartment Closet Murder Case]. [Blog] 네이버블로그Naver Blog, Available at: <https://blog.naver.com/lh0509/222647243322&gt; [Accessed 19 April 2022].

  1. [Korea Now]. (2021, May 13). Mystery around the death of a college student in Han River [Video]. YouTube. https://www.youtube.com/watch?v=UBOg1AUaFXw&feature=youtu.be

Lee, Kim, E. J. E. J. (2017, November 9). Missing-couple suspect arrested. Joongang Daily News. [online], Available at: <https://koreajoongangdaily.joins.com/2017/11/09/socialAffairs/Missingcouple-suspect-arrested/3040564.html&gt; [Accessed 20 May 2022].

Lee, M., 2021. “Friend’s phone finally found in mysterious death.” Korea JoongAng Daily, [online] Available at: <https://koreajoongangdaily.joins.com/2021/05/31/national/socialAffairs/river-park-death/20210531173300402.html&gt; [Accessed 27 April 2022].

Lee, Y. J. (2017, November 8). “다섯 장면으로 정리한 부산 신혼부부 실종사건 [The disappearance case of newlyweds in Busan organized into five scenes].  Hankyoreh, Inc. [online]. Available at <https://m.hani.co.kr/arti/society /society_general/818097.html#cb>

[Accessed 20 May 2022].


Lim, J., 2017. Korean Suspect over Missing Couple Arrested in Norway. The Korea Herald, [online] Available at: <http://www.koreaherald.com/view.php?ud=20171108000861&gt; [Accessed 27 April 2022].

Pig, S. (서촌돼지), 2019. 그갓이 알고싶다 부산 신혼부부 실종사건 후속편, 노르웨이 여인 그알 1169회[I want to know that, the sequel to the disappearance of the newlyweds in Busan, Norwegian women Gal Episode 1169]. [Blog] 네이버블로그Naver Blog, Available at: <https://m.blog.naver.com/PostView.naver?isHttpsRedirect=true&blogId=jerry_claire&logNo=221541174220&gt; [Accessed 27 April 2022].

Shim, E., 2021. No foul play suspected in South Korean medical student’s death, official says. UPI, [online] Available at: <https://www.upi.com/Top_News/World-News/2021/05/27/South-Korea-medical-student-new-evidence/7201622137049/&gt; [Accessed 27 April 2022].




Episode 2: Jeong Nam-gyu 정남규

In this episode, I discuss the murders of serial killer Jeong Nam-gyu. He killed 14 people between 2004-2006 mostly by stabbing. He was also the murderer of the woman in the Imun-dong case which Yoo Young Chul falsely confessed to. He was found dead in his cell while awaiting his death sentence at Seoul Detention Center.

<murder weapons>
<sketches of suspect>
<Map of crime scene locations>


“Convicted Serial Killer Commits Suicide in Prison” (http://www.koreaherald.com/view.php?ud=20091122000013The Korea Herald. March 30, 2010 Accessed March 15 2022.

Time line from “Jeong Nam-gyu”  Wikipedia. (https://en.wikipedia.org/wiki/Jeong_Nam-gyu)

Grazytv (April 27, 2021) The Pleasure Murderer: Korea’s #1 Psychopath Criminal In History JUNG NAM GYU [online video] Available at: https://youtu.be/Emk9Nqm_Wyg Accessed: March 19 2022

Jo, He-rim; “South Korea’s Most Notorious Serial Killers”  (http://www.koreaherald.com/view.php?ud=20170526000742) The Korea Herald. May 26, 2017 Accessed March 15, 2022

Kang, Hoon Sang (강훈상); “연쇄살인범 정남규 서울구치소서 자살(2보) [Serial Killer Jeong Name-gyu Commits Suicide at Seoul Detention Center (2 steps)]” (https://news.naver.com/main/read.naver?mode=LPOD&mid=sec&sid1=001&sid2=140&oid=001&aid=0002987292&isYeonhapFlash=Y)  연합뉴스 Yeonhap News. November 22, 2009 Retrieved March 15th 2022

Park, Joo Yeon (박주연); “[사회]남성엔 강간 일어나지 말란 법 있다 [There’s A Law Against Rape for Men] (http://weekly.khan.co.kr/khnm.html?mode=view&code=115&artid=19450&pt=nv)주간경향 Weekly Khan. March 10, 2009 Accessed March 15 2022


Episode 1: Yoo Young Chul 유영철

In this first episode, we explore the crimes of Yoo Young Chul, one of the most horrific serial killers in South Korea. Before his murder spree in September 2003-November 2003, Yoo was no stranger to crime. He had been previously arrested for theft, identity theft and rape.

Yoo began targeting elderly in wealthy areas of Seoul,; breaking into their houses and brutally attacking them with a sledgehammer which he customized himself. He then began luring sex workers to his apartment where he killed them and then dismembered the bodies in order to get them out of his 3rd floor apartment.


<footprints found at crime scenes, murder weapon, CCTV footage and locations of murder scenes>


Below are the resources used for this episode.

The Raincoat Killer : Chasing a Predator in Korea (https://www.netlfix.com/title/81087760 (2021), Netflix

Yoo Young Chul (https://web.archive.org/web/20140221072522/http://www.crimelibrary.com/serial
_killers/weird/yoo_young_cheol/1.html) at crimelibrary.com Retrieved 24 December 2021

“South Korean Gov’t to Introduce DNA Databank” (http://english.chosun.com/site/data/html_dir/2004/08/10/2004081061010.html) Chosun Ilbo. Arirang TV 10 August 2004 Retrieved December 24 2021

Ko, Dae-hoon; Min, Seong-jae (18 July 2004). “Suspect held in killings of masseuses, elderly”. Korea JoongAng Daily. Retrieved 24 December 2021

Min, Seong-jae (20 July 2004). “Serial killer was caught by masseuses, not the police”. Korea JoongAng Daily. Retrieved 24  December 2021

Im, Jang-hyuk (27 July 2004). “Police apologize for kicking woman”. Korea JoongAng Daily. Retrieved 24 December  2021