Jae Jin isn’t Sa kang’s biological son. She couldn’t have children after her last miscarriage. Jae Jin’s real mother is her husband’s high school lover who had dropped him off at the vacation house. Ever since then, Sa gang have kept the secret of Jae Jin’s birth.
After confronting Se na on her hidden camera, Yeong won meets with Sa kang, once more expressing her disappointment in her for all her lies throughout the years. Sa Kang chalks it up to protecting her family which further annoys Yeong won. She leaves her with the hidden cameras she found, telling her to be the one to look for the culprit responsible for planting them.
Afterwards, Sa Kang questions Mr An and the household maid about the cameras. They try to exonerate themselves by listing Tae Oh as a suspect especially since he acted like he owned the house when the family were away. But the real culprit is Mr An.
Meanwhile, Dr Oh visits Jae Jin at the clinic where he’s living in. He’s devastated over Se na’s disappearance and Dr Oh tries to make him see he was only being used by her. He stubbornly refuses to believe it. She then tries to coax him and get him some food.
Yeong won meets her brother Young min at their mother’s mental home. As usual, their mother doesn’t recognize them, thinking Yeong won is a doctor and Young min is a patient. The siblings talk in private and Young min is angry that Yeong won chooses to protect the family. But their mother who regains her senses for a little while overhears their conversation and scolds Young min for disrespecting his sister. She reminds him that Yeong won sacrificed herself just so she could take care of her hospital bills and his tuition. Due to this, she tried so hard to please the family. Their mother forces Young min to apologize which he does but she looses her memory again in the next second.
Later, Yeong won reveals to Young min that the family is being blackmailed by Se na and it’s her plan to destroy them little by little. They head to the police station where they learn that Cha min gu, the detective in charge of her case , insisted that the fire which killed Se na’s parents was planned. They also learn that he went to Yongin after his retirement. Young min goes there to investigate, promising to keep Yeong won in touch.
But Yeong won recieves the shock of her life when So Yi, Do hyun’s girlfriend comes to her office claiming to be pregnant. She is shameless and sarcastic as she even gives Yeong won a sonogram as evidence of her pregnancy. She wants her to send she and Do hyun. abroad to avoid gossip. Yeong won tries to talk her out of it but she is determined to keep the baby and leaves.
So Yi texts Do Hyun that his mother knows. He talks to Tae Oh about it. He predicts that his mother will lash out at him, going against her perceived calm nature. Sa Kang is shocked when Yeong won informs her about the pregnancy. She suggests they make So Yi abort it but Yeong won is concerned with Do hyun’s feelings. But Sa Kang thinks differently, mocking Yeong won for being a counselor who can’t even control her family.
Do hyun talks with Yeong won but he refuses to reason with her, preferring to speak with his father Instead. Sa Kang overhears them and goes to see Jae Jin. She barges into Dr Oh who is getting him shaved. Dr Oh panics and leaves while Sa Kang encourages Jae Jin to return home before informing him about Do Hyun’s situation. Jae Jin is shocked and leaves with his mother much to Dr Oh’s annoyance.
Yeong won is unhappy with Jae Jin’s presence in the house but Sa Kang reminds him that Do hyun needs his Dad. She also tells her to meet with So Yi’s mother in private and that she will arrange the meeting. Meanwhile, Jae Jin and Do Hyun speak and he reveals that he’s using So Yi’s pregnancy as an opportunity to be free. His true purpose is to reunite with his best friend Jun ho who lives abroad and Jae Jin decides to support him.
Dr Oh is obsessively going through some old pictures when she suddenly begins to get anxious. She downs some pills and just then, gets a text from Tae Oh, who is feeding her with lies that Jae Jin was sorry for leaving abruptly and that he is being locked up in his house and needs someone to save him. (What is Tae Oh’s deal? What is he plotting?)
Yeong won meets up with Sa Kang and So Yi’s mother at soft hands restaurant. The woman wants them to get married which doesn’t sit right with Sa Kang and Yeong won. Sa Kang thinks she’s trying to destroy Do hyun’s future but So Yi’s mother claims that it’s her daughter who would suffer the consequences. Sa Kang then offers her 500,000 dollars which offends the mother. She leaves in anger and Yeong won cautions Sa Kang, telling her to mind her business. However, Sa Kang is suspicious and orders Mr Park to look into So Yi’s family.
Yeong won tries to apologize to So Yi’s mother but she doesn’t want to talk to her and leaves in a taxi.
Yeong won and Young min finally finds Cha min gu who now owns a deer farm. However, when he hears they want to know about Lee Se na, he refuses to speak to them until Yeong won confesses that Se na is blackmailing her son. He opens up and reveals that Lee Se na’s older sister had survived the incident. She was in a coma so the papers wrote she was dead. However, when she woke, she told him it was Se na who set the house on fire to kill their parents because of her. She begged him to keep her survival a secret from her sister. He tried to pursue the case but it got closed because Se na got adopted. He hands Yeong won the second daughter’s address.
When Yeong won returns home, she is yelled at by Do hyun for giving So Yi’s parents money in exchange for aborting the pregnancy. Yeong won knows it’s Sa kang’s doing and confronts her for it, hinting that she isn’t like her who would control her child’s life. She warns her not to interfere in Do hyun’s life, shouting that she’s protecting a family who does nothing but lie to each other.
Later, Yeong won tearfully goes through Do hyun’s baby pictures. She receives a cryptic message from Se na about motherhood and that annoys her.
She then meets Do hyun assuring him of her support no matter what happens. Do hyun holds her hand and thanks her. Yeong won meets Jae Jin outside the door. He doesn’t speak to her as they both go their seperate ways.
The next day, Yeong won goes to the address of Se na’s sister. Turns out she’s now a Catholic nun called Sister Maria. In the next scene, we see Yeong won interviewing the sister in her studio. She exposes how Se na slowly grew obsessed with her, first killing the pigeons because she hated it, then killing a cat, hurting the boy next door before finally burning their house after their parents tried to help.
Se na panics after seeing the interview and calls Yeong won who tells her to meet her before the footage goes live for the world to see. Se na hurries over to her studio but when she arrives, she finds only Yeong won there. She demands for her sister and Yeong won confronts her for killing her family and that she doesn’t know if she’s concerned for her sister or she’s trying to hide her secret. Se na replies that she killed them because they didn’t accept her love. Yeong won counters that it isn’t enough justification. Se na yells for her sister again. That’s when Yeong won tells her that her sister is dead. Before she knows it, Se na grabs her neck and strangles her.
What are your thoughts on this episode?