''Psychopath Diary'' () is a 2019 South Korean television series starring

Yoon Shi-yoon Yoon Shi-yoon (; born Yoon Dong-gu on September 26, 1986), also known professionally as Yun Si Yun, is a South Korean actor and television personality. He is best known for his leading roles in ''King of Baking, Kim Takgu'' (2010), ''My Cute Guy ...

Jung In-sun Jung In-sun (born April 25, 1991) is a South Korean actress. Filmography Film Television series Web series Television show Music video appearance Ambassadorship * Public Relations Ambassador for the 41st International Contempo ...

and Park Sung-hoon. It aired on

tvN TVN may refer to: * TVN (Australian TV channel), a former horse racing channel * Televisión Nacional de Chile, a public broadcaster * TVN (Indonesia), a former television station; predecessor of Rajawali Televisi * TVN (Norway), or TVNorge, a comm ...

from November 20, 2019 to January 9, 2020.

Synopsis

Yook Dong-sik (

), 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 (

) patrol car which causes him to suffer from

retrograde amnesia In neurology, retrograde amnesia (RA) is a loss of memory-access to events that occurred or information that was learned in the past. It is caused by an injury or the onset of a disease. It tends to negatively affect episodic, autobiographical, ...

. 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.

Cast

Main

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. *

as Shim Bo-kyung, an officer in a patrol station. * 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.

Supporting

People around Yook Dong-sik

Lee Han-wi Lee Han-wi (born June 17, 1961) is a South Korean actor. Since his acting debut in 1983, Lee has become a prolific supporting actor on Korean film and television. He is particularly known for his mastery of ad-libbing In music and other pe ...

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. * Jung Su-bin as Yook Dong-chan, Dong-sik's younger half-brother. *

So Hee-jung So Hee-jung ( born on 28 May 1973) is a South Korean actress. She made her acting debut in 1994 in theater, since then, she has appeared in number of plays, films and television series. She got recognition for her supporting roles in '' The K2' ...

as Na In-hye, Dong-sik's step-mother, Dong-chan's mother. *

Heo Sung-tae Heo Sung-tae ( , born 20 October 1977) is a South Korean actor with over sixty film and television credits. He came to national prominence in the 2016 period thriller film ''The Age of Shadows''. Early life Heo was born in Busan, South Korea. ...

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 Choi Dae-chul (born Choi Won-chul on October 16, 1978) is a South Korean actor. He has been active in musical theatre since 2002, but has also played supporting roles in television dramas such as ''Wang's Family'' (2013), ''Jang Bo-ri Is Here!' ...

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 Choi Tae-hwan (born February 28, 1989) is a South Korean actor and model. Filmography Film TV movies Television series References External links * {{DEFAULTSORT:Choi, Tae-hwan 1989 births Living people 21st-century South Korean ...

as Shin Seok-hyun *

Hwang Sun-hee Hwang Sun-hee (born August 15, 1986) is a South Korean actress. Career After supporting roles in the miniseries '' Sign'', ''City Hunter'' and '' Wild Romance'', she played her first leading role in the daily drama '' Love, My Love''. In May 2 ...

as Jo Yoo-jin

Others

* Gu Ja-geon as a bully

Special appearances

Jung Hae-kyun Jung Hae-kyun (; born August 16, 1968) is a South Korean actor. He is known for his roles in '' The Villainess'', '' Along With the Gods: The Two Worlds'' and ''Confession of Murder ''Confession of Murder'' (; lit. "I Am the Murderer") is a 2 ...

as Kim Myung-gook, a homeless man. ( 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 Han Ji-eun (; born 3 June 1987) is a South Korean actress. She made her acting debut in 2010 in the film ''Ghost''. She is known for her work in both film and television including ''Real'' (2017), ''Rampant'' (2018), ''100 Days My Prince'' (201 ...

as a woman with a big guy (Ep. 2) *

Yoon Ji-on Yoon Ji-on is a South Korean actor. He is best known for his roles in television series such as ''Be Melodramatic'' (2019), ''Memorist'' (2020), ''You Are My Spring'' (2021) and '' Tomorrow'' (2022). Biography and career In 2016 he made his de ...

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 Sangam-dong is a legal '' dong'' ( neighborhood) of the Mapo District in Seoul, South Korea. In the wake of the 2002 FIFA World Cup, a large apartment complex and DMC business district have been created and developed into the center of western Seo ...

, Seoul.

Original soundtrack

Part 1

Part 2

Viewership

References

External links

* * * {{Works by Studio Dragon TVN (South Korean TV channel) television dramas Korean-language television shows 2019 South Korean television series debuts 2020 South Korean television series endings Television series by Studio Dragon Television series by KeyEast South Korean comedy television series South Korean thriller television series