On the building rooftop, Jong Woo meets Seo Mun Jo, who has taken a liking to him. They bond over their mutual interest in crime and art.

Something about Mun Jo and the mystery meat rests uneasily with Jong Woo, causing his nightmares to worsen. Um Bok Sun's lies come to light.

There's been an intruder. But before Jong Woo is able to catch the person who broke into his room, Mun Jo pulls him aside to offer a word of advice.

When Min Ji Eun stops by Eden alone, Jong Woo rushes home with the police — only to have her lash out at him for overreacting. He needs to get out.

Jong Woo confides in a new neighbor, and they agree to look out for one another. So Jeong Hwa's investigation finally develops some leads.

Mun Jo helps out Jong Woo when he's arrested after a brawl. While the act of kindness intensifies Jong Woo's fear, something violent stirs from within.

Suspecting that Kang Seok Yun's message is a cry for help, Jong Woo goes back into Eden to pull him out. But Seok Yun nervously admits it was a joke.

Mun Jo dares Jong Woo to commit his first murder if he ever wants to see Ji Eun again. When Jong Woo refuses, his bloodthirsty neighbor is dissatisfied.