At the house, Seol-Ah kills Jun-Beom in the yard in Siren’s Kiss episode 9. She cries. The policewoman Joo-Young points her gun at Seol-Ah. She asks her not to move. She sees the dead on the ground and Seol-Ah’s hand stained with blood. Woo-Seok shows up. He sees it as well. Seol-Ah moves in the end. Joo-Young has to shoot into the sky. The two police in the room hear the gunshot.
Joo-Young threatens Seol-Ah that she will shoot her if she moves forward. But the lady doesn’t stop her moving. Woo-Seok runs to Seol-Ah. He hugs her to fall on the ground after Joo-Young shot her. Woo-Seok asks Seol-Ah if she’s fine. But she notices the wound on his arm. He asks her what happened. She looks at him. She cries.
The police arrive in the yard. Seong-Il orders the police to arrest Seol-Ah. The police parts Woo-Seok and Seol-Ah. Woo-Seok resists. Seong-Il grabs Woo-Seok’s collar. He reminds him that it’s a murder case. Seol-Ah is handcuffed. She’s taken away by the police.
Woo-Seok gets off the ambulance after he got the treatment. He walks to the house. At the police station, Seong-Il watches the video that Woo-Seok saves Seol-Ah. Joo-Young reports to the lead leader that she submitted the shooting report. He thinks she did nothing wrong. He asks her to focus on interrogating Seol-Ah.
In the house, Woo-Seok sees the murder weapon on the floor. Seol-Ah held the murder weapon. She asked Jun-Beom not to approach her. But he grabbed the murder weapon. He mentioned he had died for her one time. He thought it was fine that he died for her again. He used the murder weapon to stab himself.
In the interrogation room, Seol-Ah doesn’t say anything. Joo-Young guesses the lady wants to use her right to remain silent. Seong-Il reminds Seol-Ah that she’s a murderer. He figures it out that she wants to pretend to be silly, waiting for the lawyer. He thinks she’s very smart.
At the house, Woo-Seok discovers that someone was there. He goes to chase the guy. He finds the blood on the tree trunk and the footprint. He looks for the guy in the woods until he reaches the road.
The next day, Jae-Uk persuades Sun-Ae not to take Seol-Ah’s side at Royal Auction after knowing the lady killed a person. He thinks they should fire Seol-Ah. But she yells at him. She worries about the lot after the rich man Jun-Beom is dead. She asks him to go to invite Lawyer Kim. They need to deal with Seol-Ah’s case first.
Sook-Ji and Eun-Hyuk walk out of the police station after they gave the clothes to Seol-Ah. Sook-Ji doesn’t understand why Seol-Ah gave up. Seol-Ah acted like she was the murderer. Woo-Seok returns to the police station. He reports it to Seong-Il that the person who was killed in the villa wasn’t Jun-Beom. The real Jun-Beom died in Syria seven years ago.
Joo-Young doesn’t believe it. She wonders who was the dead last night. Woo-Seok reveals the guy was Soo-Ho. She remembers the person was Seol-Ah’s ex-boyfriend who died in Syria. He reveals Soo-Ho and Jun-Beom went to Syria. The one who died in Syria wasn’t Soo-Ho. It was Jun-Beom. Soo-Ho turned himself into his deceased friend. He had been living as Jun-Beom. Joo-Young asks Woo-Seok how he knew it. He reveals it was iris.
Soo-Ho used Jun-Beom’s face to return to the company. But the security system couldn’t identity. The employee mistook that it was a system failure. So he changed it. But the fact is that the two’s irises are different. Soo-Ho couldn’t change his iris even if he changed his look.
Seong-Il checks Soo-Ho and Jun-Beom’s DNA test reports. He learns that the two are all the same person. But it cannot change the fact that Seol-Ah is a murderer. Woo-Seok tells the team leader that the evidence showed that there was the third at the scene. He’s surprised that Seong-Il didn’t receive the report. He promises him that he will give the evidence to him. But he wants to meet Seol-Ah. He mentions the lady walked forward even if Joo-Young shot into the sky. He thinks Seol-Ah has given up everything. He tells him that Seol-Ah won’t say anything.
Joo-Young wonders if Woo-Seok can make the lady change her mind. He claims that he will try to persuade the lady. He promises her that it won’t affect the investigation.
Seong-Il and Eun-Gyeom watch the dead’s photo in the office. Eun-Gyeom tells Seong-Il that the one who killed the dead was a man. But Seong-Il points out that they found Seol-Ah’s fingerprints on the murder weapon. Eun-Gyeom guesses Seol-Ah stabbed the victim after the victim fell down. Seong-Il learns that Soo-Ho came back with Jun-Beom’s identity after he was dumped by Seol-Ah. Eun-Gyeom thinks other people and Yun-Ji were killed by Soo-Ho. Soo-Ho was very determined, according to the photos. But he’s the victim this time. Eun-Gyeom guesses Seol-Ah and Soo-Ho had a fight after she found out the man’s identity.
Woo-Seok walks into the interrogation room to meet Seol-Ah. He asks her if she was hurt. She tears up. She asks him if his arm is fine. He says that it was just a scrape. But she knows he was almost killed. She thinks he should go to hospital. But he asks her about Jun-Beom. He guesses she knew the guy was Soo-Ho when he fell down at Royal Auction. The guy took her to the villa when he went to do the DNA test. He knows there was someone else in the villa. The guy was the one who killed Jun-Beom. He asks her if she saw it.
Seol-Ah realizes that it’s Woo-Seok’s turn. She mentions he trusted her even if she claimed that she killed her parents. She reminds him that he will be the next target if he becomes her man. She tells him that she killed the fools. But he knows she lied. She takes off her coat. She shows him the scars on her back. She says that those guys felt sorry for her. They wanted to do anything for her. So she asked them to beat her and die like her parents.
Seol-Ah asks Woo-Seok to stay away from her. But he walks to her. He helps her wear the clothes. He knows she worries that he will be hurt. He reminds her that she survived even if she didn’t want to live. She didn’t break down. She isn’t a perpetrator. She’s the survivor. She didn’t do it. So she shouldn’t give up. He asks her to speak out the truth. He promises her that he will help her resolve the problem. She’s not alone. She tears up. She comforts him that she will survive this time. She asks the police outside to take away the guy. She thinks he’s not related to the case.
Woo-Seok walks out of the interrogation room. He thanks Joo-Young for letting him see Seol-Ah. She claims that they did it because the thought Seol-Ah would say something to him. He thinks Seol-Ah didn’t want him to be involved. He mentions the lady lied and pushed him away. But she thinks Seol-Ah didn’t lie. He mentions Seol-Ah showed him the wounds. Her body didn’t act so even if she claimed that she killed those guys. But Joo-Young thinks Seol-Ah acted to win sympathy. Lawyer Kim shows up. He asks the two where Seol-Ah is.
At Royal Auction, Na-Hee wonders what will happen to Seol-Ah. She saw the lawyer walking out of the chairman’s office. Tae-Suk thinks Seol-Ah is a murderer. He worries about the auction. Na-Hee mentions Yun-Ji fell off the building and died. Tae-Suk wonders if it’s the curse of Yun-Ji. Na-Hee asks her boss Sang-Mi if she’s not afraid of it. But Sang-Mi orders Na-Hee and Tae-Suk to prepare the auction. She believes that Seol-Ah will come back soon.
Lawyer Kim meets Seol-Ah in the interrogation room. He tells her that the chairman worried about it very much. He mentions Yun-Ji’s death seriously damaged Royal Auction’s reputation. Another client died. He takes out the paper. He wants her to resign. So the case can be resolved. But she tears up the paper. She asks him to tell the chairman that she won’t bring any trouble to the company. Because she’s going to leave the place.
Seol-Ah and the lawyer meet Joo-Young. Seol-Ah tells the cop that the person’s attitude was changed after he admitted that he was Soo-Ho.
It flashes back. In the villa, Soo-Ho asks Seol-Ah if she will take a look at him if he comes back with the identity of Soo-Ho. He mentions she came to flirt with him after knowing he had the painting. He thinks they can be happy. Because he’s the Jun-Beom who can do anything. He promises to give her anything when he touches her. But she thinks he’s crazy. She runs aside. He laughs and catches her. He tries to kiss her. She screams and grabs the murder weapon.
At present, Seol-Ah tells Joo-Young that she grabbed someone for protecting herself. But the power suddenly went out. Soo-Ho asked her to stay in the house. But she went out. She saw the guy lying in the yard. His chest was stabbed by the murder weapon. There was another person at the villa, according to Seol-Ah’s words. Joo-Young asks Seol-Ah if the person is the murderer. She asks her to think about what she saw and what she heard. So she can prove that she’s not the murderer. But Seol-Ah points out that it’s the police’s job to prove it.
Outside the police station, Woo-Seok talks with the junior over the phone. He’s told that the bloodstains on the tree belongs to the victim. He gets into the police station. But Seong-Il still treats Seol-Ah as a suspect. Woo-Seok suggests that Seong-Il should go to look for the person who found out that Soo-Ho was Jun-Beom first. He thinks the person was the one who caused Soo-Ho to have an allergic reaction. He mentions Soo-Ho passed out after he drank the champagne at Royal Auction. It’s obvious someone targeted Soo-Ho. The person wasn’t Seol-Ah. He mentions they suspected Jun-Beom and got the DNA sample. But they didn’t know the guy was Soo-Ho.
The next day, Joo-Young releases Seol-Ah from the jail. She tells her that Woo-Seok worried about her very much. She asks her not to get the man involved. She thinks the man will be hurt if he crosses the line. Woo-Seok waits for Seol-Ah outside the police station. She walks out of the police station with the lawyer. Woo-Seok walks to Seol-Ah. The lawyer leaves. Woo-Seok knows Seol-Ah wanted to push him away. He asks her not to lie at the police station anymore. He thinks she needs to protect herself first. She’s surprised that he still trusts her since he was at the scene. He reveals he was like a mad man to search every corner of the crime scene. He worried that he would find the evidence. He worried that it would prove she was the murderer. He worried that he would destroy evidence. He claims that he won’t leave even if she killed a person. He will be with her. She’s moved. She reminds him that it will ruin him. But she thinks he has been ruined. He stops her from leaving. He asks her to go to his house. He thinks her house isn’t safe. Because someone is watching. She points out that Jun-Beom is dead. But he reminds her that the murderer is alive. She passes out in his arms.
Eun-Hyuk arrives at the police station. He sees Seol-Ah leaving with Woo-Seok in the car. He tries to chase the car.
Woo-Seok cooks at home. Seol-Ah falls asleep in the bed in the bedroom. She has a nightmare about Jun-Beom. She wakes up and sees the medicine Woo-Seok prepared. She walks out of the bedroom. She tells Woo-Seok that she feels better now. She wants to leave. But he stops her. He asks her to have meal first. He won’t let her go if she doesn’t eat it up. She sheds tears while she eats.
Eun-Hyuk drinks at Sook-Ji’s place. Sook-Ji brings up that Seol-Ah’s ex-boyfriends had allergies. But Eun-Hyuk doesn’t remember it. At Woo-Seok’s house, Woo-Seok persuades Seol-Ah to live at his house. She points out that they’re over since Jun-Beom is dead. But he thinks they should find the guy who killed Jun-Beom. She brings up that Soo-Ho died for her again. He tells her that it wasn’t her fault. She thinks she’s not qualified to accept his help. She thanks him for believing her. She won’t forget it. She walks out of his house. He stops her. He asks her to reconsider it. He worries that she will be in danger. Because the murderer wasn’t caught. She points out that the murderer’s target is the man beside her. He has to let her go.
Seol-Ah walks on the street. She wishes Woo-Seok won’t be hurt. She goes to Royal Auction. She tells the employees that the meeting is going to begin. Na-Hee is surprised that the chief wasn’t fired because of murdering a person. Tae-Suk thinks the chief didn’t kill the guy. Because she came to the company. But she believes that Seol-Ah got involved in something bad. She mentions the lady went to the client’s house at night. But he thinks it’s not important. He reminds her that they should take Seol-Ah’s side. He thinks he’s better than her.
Seol-Ah walks into Sun-Ae’s office. Sun-Ae guesses Seol-Ah suffered. She gives her a hug. She complains it to her that she has prayed for her many times. Seol-Ah mentions Sun-Ae sent Lawyer Kim so that the case was resolved. She thanks her. But Sun-Ae thinks Seol-Ah should be tough at the moment. Seol-Ah promises Sun-Ae that she will do a job next time. But Sun-Ae lets Sang-Mi replace Seol-Ah after Sang-Mi practiced.
Sang-Mi chases Seol-Ah out of the chairman’s office. She tells her that she didn’t intend to do that. But Seol-Ah supports Sang-Mi. She asks her to help her the last time. Eun-Hyuk walks into Seol-Ah’s office. He asks her why it’s her last auction next week. She reveals the lawyer brought the resignation letter to her when she was at the police station. He asks her to go to persuade the chairman. But the chairman has made the decision. She thinks it’s fine. Because she can do something she wants to do.
Seol-Ah goes to the house in the evening. She suspects that the chairman hid the painting in the house. Eun-Hyuk volunteers to help her look for the painting. But she doesn’t want him to do that. Because he cared for her too much. Seol-Ah returns home. She sees Woo-Seok through the window. The guy holds an umbrella standing in the rain. He wants to call her. But he doesn’t take action. He walks away.
The next day, Seong-Il finds out that the one who gave champagne to Jun-Beom was the employee of Royal Auction, Eun-Hye. He and Joo-Young interrogate the girl in the interrogation room. Woo-Seok goes to Hyun-Su’s apartment. He gets the evidence. He tries to leave. But Hyun-Su returns. Seol-Ah takes Woo-Seok to hide before he’s seen by Hyun-Su.