Watch: Yoon Shi Yoon, Jung In Sun, And Park Sung Hoon Have A Blast On Day 1 Of "Psychopath Diary" Filming

Oct 31, 2019

tvN’s “Psychopath Diary” has revealed behind-the-scenes footage from the drama’s first day of filming!

“Psychopath Diary” is a comedy thriller about a man named Yook Dong Shik (played by Yoon Shi Yoon), a timid pushover who happens to witness a murder. While attempting to flee the scene, he suffers an accident that causes him to lose his memory. When he wakes up and discovers the murderer’s diary — which describes his crimes in detail — in his hands, Yook Dong Shik becomes convinced that he is a psychopathic serial killer.

Jung In Sun plays the passionate neighborhood police officer Shim Bo Kyung, who chooses a realistic life instead of pursuing her dreams. Park Sung Hoon is the psychopath Seo In Woo, who is the owner of the diary that gets into Yook Dong Shik’s hands. The drama is directed by Lee Jong Jae of “100 Days My Prince” and screenwriter Ryu Yong Jae of “Liar Game” and “Time Between Dog and Wolf.”

Yoon Shi Yoon introduces himself, saying, “I play Yook Dong Shik, a man who thinks he’s a cold-blooded psychopath. Being on set is fun. Dong Shik is a lot dumber than I thought, so I’m looking forward to it.” Befitting his description of his character, Yoon Shi Yoon acts disoriented and lost as Jung In Sun tries to make him come to his senses.

Jung In Sun greets the camera with a salute and says, “I think I’ll be able to continue filming happily because everyone is great.”

Park Sung Hoon is a scary psychopath when the cameras are rolling, but he shows his cute side while waiting to film his next scenes. He shares, “The atmosphere is very nice, as if we’ve been working together for a long time. I’m anticipating that the results will come out great as well.”

Near the end of the video, Yoon Shi Yoon, Jung In Sun, and Park Sung Hoon are having a friendly conversation when they are interrupted by a loud screech. Viewers will be able to find out what surprised the three actors when the drama premieres on November 20 at 9:30 p.m. KST.

Watch the full behind-the-scenes video below!