So Young continues trying to find Nam Chul Soon without her senior detectives' help. Following traces and Nam Chul Soon's behavior patterns, she ends up in Nam Chul Soon's vacation house and finds something. Meanwhile, Se Hwang tries to come up with a scheme to bring back the item he has lost.
申素英在警局工作，她在調查隊裡擔任罪犯側寫師，生性敏銳的她總是能從細微中去發現案情不單純，也因而常常與組員起衝突。正當調查隊接獲線報去查看南哲順失蹤案時，素英卻獨自前往南哲順的家中，以犯罪心理學去踹摩案發當下可能的情形。經過她仔細的推敲果然在浴室的鏡子後方找到了南哲順的屍體。姜坤搬回首爾的那天，在公寓前遇見了素英，他一眼就認出她，她是那個奇異夢裡的跳樓的女子…
