Jin Gook strongly believes that Moo Young is related to the murder of Jeong Mi Yeon and warns Moo Young that he will catch the killer no matter what. Moo Young wishes him good luck but insists that Jin Gook gets it all wrong and he isn’t the killer. Never-theless, Jin Gook visits Lim Yu Ri, the witness, and asks her how the two were related. Meanwhile, Seung Ah is grounded for sleeping with Moo Young, and she asks Jin Kang a favor.