Episode 12 - S1.E12

Ae Ra covertly places what seems like a murder weapon inside Hyun Tae's car, which leads to his eventual arrest for murder. But just as she believes that the situation is under control, Ae Ra becomes the victim of blackmail by someone from her past who has a grudge against her. At the same time, Se Rin discovers Se Yeon's past and feels remorseful for how she has treated her lately.