Mi-ho tries to ask Jung-sik about the relationship between Su-bin and Yu-jin, but Jung-ah shows up and stops him. Later, Jung-ah tells Mi-ho about the heavy loan Ji-ye took out to buy a house and that Ji-ye has a motive. Mi-ho decides to follow Su-bin and Ji-ye and finds out that Ji-ye was at Yu-jin’s house on the night of the murder. Meanwhile, Ji-yul tells Mi-ho that she has an older sister.