Season
- Season 1 2019-11-20
Episode
- Episode 1: Memory Loss
- Episode 2: I Am a Predator
- Episode 3: I’m Coming for You
- Episode 4: You and I Are the Same
- Episode 5: He’s Not Who He Seems
- Episode 6: Who is the Real Killer
- Episode 7: A Copy Cat Killer
- Episode 8: Closed Case
- Episode 9: It Wasn’t Me
- Episode 10: The Killer Inside Me
- Episode 11: I’m Not a Nice Guy
- Episode 12: The Confession
- Episode 13: Jailbreak
- Episode 14: I Remember
- Episode 15: The New Chairman
- Episode 16: The Final Battle
Psychopath Diary Season 1 The Killer Inside Me
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.
