S01E01 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...
Psychopath Diary
S01E05: 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.
Overview
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.
Episodes
S01E02 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...
S01E03 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...
S01E04 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...
S01E05 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...
S01E06 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...
S01E07 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...
S01E08 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...
S01E09 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....
S01E10 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...
S01E11 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...
S01E12 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...
S01E13 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...
S01E14 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...
S01E15 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...
S01E16 The Final Battle
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,...
Cast
Yoon Shi-yoon
Yook Dong Shik
Jung In-sun
Shim Bo Kyung
Park Sung-hoon
Seo In Woo
Lee Han-wi
Yook Jong Chul
Hwang Hyo-eun
Yook Ji Yeon
Lee Min-ji
Oh Mi-Joo
Choi Tae-hwan
Shin Seok-hyeon
Han Soo-hyun
Kim Mu Seok
Oh Chae-eun
[Seo Ji-hoon's secretary]
