Soon Ki receives a photo of Hee Soo and Soon Ki leaving Oh Soo's home. He begins to suspect the relationship between Suk Jin and Soon Ki. Oh Soo and Min Jae hides in the subway that appeared in Hae In's traces of images, and catches Young Chul taking out something from the safe. Oh Soo is determined that Young Chul is the murderer, so he interrogates him, but Young Chul talks about the painful past of Oh Soo instead. Seung Ha finds Hae In who faints after reading "Dante's Melody", so he immediately sends her to the hospital. Since then the two of them become closer. (Source: Viu)