Although Ji A tells In Bum to forget what his conscience tells him, she decides to help him and confronts the building owner's wife, the murderer. After doing a bit of research, they decide to tear down a wall in the basement they think she hid the body behind. Meanwhile, Hwa Jung learns that the nephew of Oh Sung Sik, the case from 20 years ago, is Oh In Bum but doesn't tell Ji A.