Psychopath Diary

Psychopath Diary (Korean: 싸이코패스 다이어리) is a 2019 South Korean television series starring Yoon Shi-yoon, Jung In-sun and Park Sung-hoon. It aired on tvN from November 20, 2019 to January 9, 2020.

Psychopath Diary
Promotional poster
Hangul
싸이코패스 다이어리
Revised RomanizationSsaikopaeseu Daieori
Genre
Created byStudio Dragon
Written by
  • Choe Sung-jun
  • Kim Hwan-chae
  • Ryu Yong-jae
Directed byLee Jong-jae
Starring
Country of originSouth Korea
Original languageKorean
No. of episodes16
Production
Running time60 minutes[2]
Production companyKeyEast[3]
Release
Original networktvN
Original releaseNovember 20, 2019 (2019-11-20) –
January 9, 2020 (2020-01-09)

Synopsis

Yook Dong-sik (Yoon Shi-yoon), an analyst who works at Daehan Securities, has a timid personality and he can't even get angry at the people who look down upon him. One day, shortly after failing on his attempt of suicide, he witnesses a murder. He unintentionally picks up a diary belonging to murderer, on which was written the log of his murders. He flees with the diary, but he is accidentally hit by Police Officer Shim Bo-kyung's (Jung In-sun) patrol car which causes him to suffer from retrograde amnesia. Due to the diary in his possession, Dong-sik mistakenly believes he is a psychopath. Since that moment, his behavior started to change. Bo-kyung, who got involved with Dong-sik, decides to catch the serial killer.

Meanwhile, Seo In-woo (Park Sung-hoon), the director and son of the chairman of Daehan Securities where Dong-sik works, turns out to be the heartless psychopath serial killer. He loses his diary when his 6th victim, a homeless old man tossed his diary away. He feels insecure ever since.[4]

Cast

Main
  • Yoon Shi-yoon as Yook Dong-sik, a timid and pushover man who works as a clerk at Daehan Securities. His weak personality begins to change when he perceive himself as a killer.[5]
  • Jung In-sun as Shim Bo-kyung, an officer in a patrol station.[6]
  • Park Sung-hoon as Seo In-woo, the real psychopathic serial killer who is also the director of Daehan Securities where Dong-sik works at.[5]

People around Yook Dong-sik
  • Lee Han-wi as Yook Jong-chul, Dong-sik's father.
  • Hwang Geum-byul as Yook Ji-yeon, Dong-sik's older sister.
  • Kim Gyul as Jo Yong-gu, Dong-sik's brother-in-law.[7]
  • Jung Su-bin as Yook Dong-chan, Dong-sik's younger half-brother.[8]
  • So Hee-jung as Na In-hye, Dong-sik's step-mother, Dong-chan's mother.
  • Heo Sung-tae as Jang Chil-sung, a gangster who lives at Unit 708. He later addresses Dong-sik as his 'Big Boss' after mistakenly believes him to be a serial killer.

People around Shim Bo-kyung
  • Choi Sung-won as Heo Taek-soo, Bo-kyung partner.
  • Kim Myung-soo as Shim Seok-gu, Bo-kyung's father who is a former investigator police.
  • Lee Kan-hee as Lee Suk-yeon, Bo-kyung's mother.
  • Lee Hae-young as Officer Ryu Jae-joon

People around Seo In-woo
  • Park Jung-hak as Seo Chung-hyeon, In-woo's father who is the chairman of Daehan Securities.
  • Yoo Bi as Seo Ji-hun, In-woo's step-brother and managing director of Daehan Securities.
  • Yoon Ye-hee as Kim Eun-shil, Chung-hyeon's wife and Ji-hun's mother.
  • Kim Hye-na as Seo Ji-eun, In-woo's step-sister.
  • Lim Il-gyu as Kim Chan-il, In-woo's brother-in-law.
  • Han Soo-hyun as Kim Mu-seok, former detective who now works for In-woo.

People at Daehan Securities
  • Choi Dae-chul as Gong Chan-seok, the manager of Team 3 and Dong-sik's boss who is selfish and rude.
  • Kim Ki-doo as Park Jae-ho, Dong-shik's cunning team member who claims to be his best friend.
  • Jo Shi-nae as Han Jung-ah, Dong-sik's colleague.
  • Lee Min-ji as Oh Min-joo
  • Choi Tae-hwan as Shin Seok-hyun[9]
  • Hwang Sun-hee as Jo Yoo-jin[9]

Others
  • Gu Ja-geon as a bully

Special appearances
  • Jung Hae-kyun as Kim Myung-gook, a homeless man. (Ep. 1–2)
  • Yura as a girl with a dog in park (Ep. 2)
  • Nam Jung-hee as murder victim (Ep. 2)
  • Jo Yoon Ho as Chil-sung's junior (Ep. 2)
  • Han Ji-eun as a woman with a big guy (Ep. 2)
  • Yoon Ji-on as Joo Young-min (Ep. 4–5)
  • Lee Hyun-woong as Oh Myung-dal (Ep. 12–13, 16)

Production

The first script reading was held in August 2019 in Sangam-dong, Seoul.[10]

Original soundtrack
Psychopath Diary OST
Soundtrack album by
Various Artists
Released2019-20
GenreSoundtrack
Language
LabelStone Music Entertainment

Part 1
Released on December 12, 2019 (2019-12-12)
No.TitleArtistLength
1."Wanna be Bad" (슬퍼하고싶어)Woosung (The Rose)2:59
2."Wanna be Bad" (Inst.) 2:59
Total length:5:18

Part 2
Released on January 2, 2020 (2020-01-02)
No.TitleArtistLength
1."Stay the same" (동일하게)Cha Yeo-wool3:26
2."Stay the same" (Inst.) 3:26
Total length:6:52
Disc 2:
No.TitleArtistLength
1."Psychopath Diary" (Opening Title)Um Ki Yup, Um Ki Hyun, Lee Sun Gyeol2:54
2."Dongshik's Polka"Um Ki Yup, Um Ki Hyun, Lee Sun Gyeol2:35
3."Red Diary"Um Ki Yup, Park Min Ji2:40
4."Suspense"Kim Hee Jin1:40
5."Dongshik's related memories"Um Ki Yup, Um Ki Hyun, Park Min Ji3:46
6."Do I look like a pushover"Um Ki Yup, Um Ki Hyun3:10
7."I'm a Psycho"FaraEffect3:06
Total length:24:17

Viewership
Psychopath Diary : South Korea viewers per episode (thousands)
SeasonEpisode numberAverage
12345678910111213141516
1440329451570563586613582507398426572502615719710536
Source: Audience measurement performed nationwide by Nielsen Korea.[11]
Average TV viewership ratings
Ep. Original broadcast date Average audience share
(Nielsen Korea)[12]
NationwideSeoul
1 November 20, 2019 1.766% 1.730%
2 November 21, 2019 1.463% 1.361%
3 November 27, 2019 1.928% 2.057%
4 November 28, 2019 2.206% 2.174%
5 December 4, 2019 2.368% 2.507%
6 December 5, 2019 2.212% 2.346%
7 December 11, 2019 2.424% 2.866%
8 December 12, 2019 2.299% 2.782%
9 December 18, 2019 2.014% 2.099%
10 December 19, 2019 1.693% 1.954%
11 December 25, 2019 1.708% 2.025%
12 December 26, 2019 2.295% 2.718%
13 January 1, 2020 1.939% 2.213%
14 January 2, 2020 2.423% 2.633%
15 January 8, 2020 2.685% 2.762%
16 January 9, 2020 2.983% 3.372%
Average 2.150% 2.350%
  • In the table above, the blue numbers represent the lowest ratings and the red numbers represent the highest ratings.
  • This series aired on a cable channel/pay TV which normally has a relatively smaller audience compared to free-to-air TV/public broadcasters (KBS, SBS, MBC and EBS).

References
  1. "윤시윤·정인선·박성훈, 코믹 스릴러 '싸이코패스 다이어리' 주연 확정". Naver (in Korean). Digital Times. Archived from the original on April 4, 2023. Retrieved September 7, 2019.
  2. "Psychopath Diary (2019)". CJ ENM. Archived from the original on March 26, 2022. Retrieved March 26, 2022.
  3. "'싸이코패스 다이어리' 이한위 허성태→이민지까지, 퍼펙트 라인업(공식)". Naver (in Korean). Newsen. Archived from the original on August 23, 2021. Retrieved September 7, 2019.
  4. "'싸이코패스 다이어리' 윤시윤X정인선X박성훈, 캐스팅 확정…믿보 라인업 구축". Naver (in Korean). Hankyung. Archived from the original on November 24, 2021. Retrieved September 7, 2019.
  5. "Yoon Si-yoon, Jung In-sun, Park Sung-hoon Confirmed for "Psychopath Diary"". HanCinema. News1 Korea. Archived from the original on November 24, 2021. Retrieved September 7, 2019.
  6. "Yoon Si-yoon and Jung in-sun Courted for Drama "Psychopath Diary"". HanCinema. Xports News. Archived from the original on November 24, 2021. Retrieved September 7, 2019.
  7. "Kim Gyul to Star in "Psychopath Diary"". HanCinema. Wow TV. Archived from the original on September 8, 2019. Retrieved September 7, 2019.
  8. "빅톤 정수빈, tvN '싸이코패스 다이어리' 합류…연기돌 행보(공식)". Naver (in Korean). Newsen. Archived from the original on January 10, 2022. Retrieved September 24, 2019.
  9. "Hwang Sun-hee and Choi Tae-hwan Confirmed for "Psychopath Diary"". HanCinema. Archived from the original on September 22, 2019. Retrieved September 7, 2019.
  10. "'싸이코패스 다이어리' 윤시윤·정인선·박성훈, 첫 리딩부터 '시너지↑'". Naver (in Korean). Ilgan Sports. Retrieved September 26, 2019.
  11. "Nielsen Korea". AGB Nielsen Media Research (in Korean). Archived from the original on February 19, 2023. Retrieved July 29, 2020.
  12. "Nielsen Korea". AGB Nielsen Media Research (in Korean). Archived from the original on June 1, 2016. Retrieved November 20, 2019.
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