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TV series

Psychopath Diary

Latest episode

S1 E16 · The Final Battle

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About Psychopath Diary

Psychopath Diary is a mystery and comedy TV series that premiered on tvN on November 20, 2019. It has 1 season and 16 episodes so far and has ended. The latest episode, Season 1 Episode 16 "The Final Battle", aired on January 9, 2020.

The story of a man named Yook Dong-sik who coincidentally witnesses a murder and picks up the killer's diary. While fleeing the scene, he gets into a car accident causes him to lose his memory. Due to the diary in his possession, he mistakenly believes that he is a psychopathic serial killer.

  • Mystery
  • Comedy
  • Action & Adventure
  • Crime

Last updated

Episodes

16 episodes · 1 season

Season 1

2019 · 16 episodes · Last episode: 6 years ago

Yook Dong Sik works at a brokerage company. He is a pushover and a fool too naïve and kind-hearted for his own good. Dong Sik is at a point in his life where enough is enough and goes to end his life. However, the place he chose to end it all was a place where a murder was about to happen. As he flees in fear, he gets into an accident, and the following day, doesn’t remember a thing in his past. The only clue he has about himself is a red diary he unknowingly took. The journal contains details of all heinous killings of a psychopathic serial killer. Being an innate fool, he mistakenly begins to believe that he is a psychopathic serial killer, and the world he once knew changes drastically.

Psychopath Diary Season 1 release dates →
  1. Psychopath Diary S1 E16 still E16

    16. The Final Battle

    Finale

    It's the final battle between Dong Sik and In Woo. With the police heading their way, Dong Sik fights off In Woo, who has a gun pointed at Bo Kyung's face. As the police arrive, gunshots echo down the emergency stairway. Who will be the victor? In Woo, the psychopath serial killer? Or Dong Sik, the pushover?

  2. Psychopath Diary S1 E15 still E15

    15. The New Chairman

    To find evidence pinning In Woo to Chairman Seo Choong Hyun's murder, Dong Sik devises and starts a new plan. While Bo Kyung hooks In Woo up to a lie detector for further questioning, Dong Sik and Chil Sung search In Wook's place and discover his hideout. Meanwhile, Dong Sik's colleagues at Daehan Securities post rumors regarding the mystery behind the chairman's murder.

  3. Psychopath Diary S1 E14 still E14

    14. I Remember

    Dong Sik's memory returns to him with Bo Kyung's help. When he realizes In Wook is the serial killer playing him as the fool, rage takes over him. Finally, Bo Kyung and Chil Sung help Dong Sik start to make his move to turn the tables on In Wook.

  4. Psychopath Diary S1 E13 still E13

    13. Jailbreak

    Bo Kyung digs into her uncle's death and finds evidence proving Dong Sik's innocence. However, she falls victim to In Wook's watchful eyes and finds herself in a dire situation. Meanwhile, in prison, Dong Sik gets put on disciplinary action, and without any time or choice, he makes a daring escape.

  5. Psychopath Diary S1 E12 still E12

    12. The Confession

    Bo Kyung arrests Dong Sik as the predator serial killer, and Dong Sik stands in front of the press for pictures. However, after Dong Sik gets sentenced to life in prison, Bo Kyung comes across evidence that might prove Dong Sik's innocence. In prison, Dong Sik meets Oh Myung Dal, who was wrongfully accused of Son Ji Min's murder eight years ago, and during a chaotic moment, his real identity flashes before his eyes.

  6. Psychopath Diary S1 E11 still E11

    11. I’m Not a Nice Guy

    Bo Kyung starts having doubts about Dong Sik being a nice guy and attempts to get a sample of his DNA. Dong Sik, who is agonizing over the fact he killed Park Moo Suk, returns the million dollars to In Woo and decides to leave town. However, as Dong Sik leaves town, he soon realizes that he left the red diary at the restaurant he was at with In Woo.

  7. Psychopath Diary S1 E10 still E10

    10. The Killer Inside Me

    In Woo has Dong Sik right where he wants him. Dong Sik has no clue that In Woo is the one behind the blackmail and prepares for murder. Meanwhile, Bo Kyung, who thinks former police officer Park Moo Suk is the informant, finds his body.

  8. Psychopath Diary S1 E9 still E9

    9. It Wasn’t Me

    Dong Sik and Bo Kyung try to uncover the truth of a murder that happened eight years ago. As the two visit the crime scene, Dong Sik tries to convince himself that it wasn't him. Meanwhile, In Woo plans to set Dong Sik up as the killer to all his past murders, and Bo Kyung receives an anonymous text message about the predatory serial killer.

  9. Psychopath Diary S1 E8 still E8

    8. Closed Case

    Being the last person talking to Sung Chul, Dong Sik tells the police that Sung Chul is the predatory killer they are after. The team decided to close the case although Bo Kyung believes that he could be just a copycat killer, and the real predator still hasn’t been caught. Meanwhile, In Woo learns the truth that Dong Sik is suffered from amnesia due to the accident.

  10. Psychopath Diary S1 E7 still E7

    7. A Copy Cat Killer

    Another death made to look like a suicide arises and puts Dong Sik and In Woo on edge. According to the victim's husband's statement and with a composite sketch of the killer, Bo Kyung and the Predator Killings Task Force head out in search of the suspect. Later, someone claiming to be the serial killer calls a broadcasting network.

  11. Psychopath Diary S1 E6 still E6

    6. Who is the Real Killer

    Dong Sik wants to stop Bo Kyung from looking into the murder case happened at Goseong Chemical, so he follows her and offers help. Dong Sik gets to know Nergui by chance when he sneaks into Goseong Chemical. Nergui asks for Dong Sik’s help and tells him that Jin Goo doesn’t kill himself. Meanwhile, an open investigation begins after a dead body is found in Goseong Chemical, and In Woo finds out that Dong Sik and Bo Kyung actually know each other.

  12. Psychopath Diary S1 E5 still E5

    5. He’s Not Who He Seems

    Bo Kyung and In Woo both chase after Dong Sik for different reasons. And soon, both get closer to what they are after. Bo Kyung gets an unexpected hint from Dong Sik about the serial murders and starts to investigate a missing person case. Meanwhile, In Woo starts to become more active.

  13. Psychopath Diary S1 E4 still E4

    4. You and I Are the Same

    In Woo tries to get close with Dong Sik after secretly following him and seeing him kidnap Ji Hoon. In Woo becomes the director of the Asset Management Team and promotes Dong Sik to assistant manager. Dong Sik later finds out that he had written a suicide note on the day of killing the homeless man and is thrown into confusion. Meanwhile, Bo Kyung, who is after the serial killer, starts to find Dong Sik's behavior strangely suspicious.

  14. Psychopath Diary S1 E3 still E3

    3. I’m Coming for You

    Dong Sik determines to kill Seo Ji Hoon and secretly plans how he's going to do it. In Woo tells Dong Sik about a company going public and urges him to buy as many shares as he can. Meanwhile, Ji Hoon and Chan Suk resort to the old-fashioned way to get rid of Dong Sik, and Bo Kyung goes on a suspicious call.

  15. Psychopath Diary S1 E2 still E2

    2. I Am a Predator

    After the restroom incident with Mr. Gong, Dong Sik becomes jubilant. His world of being a pushover ends, and he begins to believe that he is indeed a predator. Meanwhile, Seo In Woo, the serial killer, starts to look for his missing diary, and Shim Bo Kyung, a patrol officer, discovers something strange in the violent crimes and attempts to find the homeless man who vanished.

  16. Psychopath Diary S1 E1 still E1

    1. Memory Loss

    Dong Sik, a stock analyst at Daehan Securities, takes the blame for a report he didn’t write that caused a leading pharmaceutical company’s stock price to fall. He decides to end his life and attempts to jump. However, a murder about to happen catches his eye.

Cast & crew

Created by Kim Hwan-chae and Ryoo Yong-Jae

  • Jeon Soo-yeon

    Jeon Soo-yeon

    Nurse (Eps 8, 9)

Psychopath Diary FAQ

Will there be new episodes of Psychopath Diary?

Psychopath Diary has ended, so no new episodes are scheduled. The final episode aired on January 9, 2020.

When did the latest episode of Psychopath Diary come out?

The most recent episode of Psychopath Diary, Season 1 Episode 16 "The Final Battle", aired on January 9, 2020.

How many seasons of Psychopath Diary are there?

Psychopath Diary has 1 season with 16 episodes in total.

When did Psychopath Diary first air?

Psychopath Diary first aired on tvN on November 20, 2019.

How do I get notified when new episodes of Psychopath Diary are released?

Download the Streambay app, follow Psychopath Diary, and you'll get a push notification the moment each new episode is released.

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