The investigators are getting closer to the serial killer and set out a bait on the internet. So Yoon comes closer to finding out the biological father of Hye Jin.

Officer Han and Woo Jae are breaking into Pil Sung's house to find a nearly killed So Yoon. Pil Sung runs away and tells So Yoon about the father in which she slowly starts to connect the pieces.

Now Ga Young has passed away, her mother is filling a complaint. The assumed murderer has been caught and Joo Hee tells So Yoon about Hye Jin's mother.