Woo Sung becomes confused after seeing Yeo Joo lie about not knowing Baek Soo Jung's perfume. He resorts to Jin Ho regarding his suspicions about his wife. However, his speculations about her end up getting worse as Jin Ho reveals what he knows. Meanwhile, the detectives think they can gain a crucial clue in the case and reluctantly head to Yeo Joo's house. Yeo Joo follows the detectives to question Yoon Hyung Sook at her house. As she gets closer to ringing the bell, Yeo Joo gets flashbacks and hesitates. Meanwhile, Woo Sung celebrates his birthday with the help of a certain someone who's watching him from far away. Later, Yeo Joo explains her deductions regarding the murder, shocking the detectives. (Source: Kocowa)