This drama clearly has no strong plot. But, with only ten episodes, each spanning the length of an hour, it did not pull any punches.
Disturbing and dark, it begins with Jong Woo moving into a dingey apartment with the least rent out of all that he had seen. With a hopeless job and seemingly disconnected friends, he is thrust directly into the company of the many strange men in his neighbouring rooms. Yet, he has no way out. No one listens to his words or has time for him.

The drama brilliantly portrayed the sweet country boy Jong Woo's many incidents that ultimately lead him spiralling into a state of mental distress so much that we at one point are unable to watch it out of sheer stress. Im Shi Wan was excellent in his role and he conveyed the intense expressions and Jong Woo's state of mind with so much reality.

Help comes in the form of a charismatic dentist, Mung Joo, with whom he shares his similar love for crime fiction. But, wh he originally thought to be the most normal out of everyone, becomes his biggest nightmare. I saw Lee Dong Wook in Goblin, but it is this drama that truly showed his talent. The very mad gleam in his eyes, the flicker of compassion (only for Jong Woo, by the way) and his own strange perceival of nature and human mind was almost paradoxical. It was weird that Jong Woo and more chemistry with him than his own girlfriend Ji Eun, who was saddled with work load and never really semed to have her 'country boy' image of his removed from her mind.
People keep pushing their frustrations out on everyone , and Jong Woo, a good guy, realizes that he was being pushed around and maybe it was time to snap back.

The turn of events, the gory scenes and most importantly, the sheer incompetence of the police was mind numbing. There was a moment I assumed that one of the policemen/detective was working in favor of Eden studio.
*Mild spoiler*: this would also make the ending more possible.
I was suprised that I liked it so much. Every single supporting character delivered their roles well. All in all, this is definitely a highly thrilling, re-watch worthy drama, especially for starters of this genre.