Who is the Real Culprit

Joon Young asks Woo Hyun if Jo Pil Doo is the real culprit who killed seven girls. Tae Pyung is scared that he may not be able to protect Joon Young when she’s in danger. Woo Hyun tells Joon Young that Do Kyung is Hyun Woo. Meanwhile, Ji Won gets to know that Pil Doo’s DNA was found under Mi Jin’s fingernails.