Hyun Woo interrogates Yi Rang for meeting Jeon Sang Ho just before his death. With no clear evidence, Yi Rang evades answers by citing the attorney-client privilege. Meanwhile, Na Hyun, attorney for Kim Su Jeong, learns from Kim Tae Jun that Sang Ho's research relates to treating Tae Jun's wife's illness. Na Hyun, pretending to believe Yi Rang's claims, seeks clues through Yi Rang to solve the case.
