Flashback…On a dark raining night the real Baek Hee Sung drives and hits Do Hyun Soo who runs into the road from the woods. Hyun Soo goes over the car. Hee Sung exits the car and tells Hyun Soo he'll call an ambulance. Hyun Soo grabs his hand and tells Hee Sung no hospital.
At the hospital Detective Cha Ji Won watches her husband Baek Hee Sung / aka Do Hyun Soo get jolted after a near drowning where she saved him.
Hospital flash…Hyun Soo things about his sister Do Hae Sue when they were younger. Hyun Soo doesn't want his siter to find him. He won't live as Hyun Soo again.
Hee Sung wakes in the hospital room. He sits up gingerly and grabs his head. He gets out of the bed and leaves the room.
He imagines the police officer in the hallway calls him Hyun Soo. He tells him it's over. He handcuffs Hyun Soo. Instead the officer says he'll take Hee Sung back to his room. Hee Sung pushes past him and down the hall. Ji Won sees him in the hallway. She rushes to him. Hee Sung reads her facial expression. She hugs him and cries. Hee Sung allows himself to hug her back. He tells her he's okay.
Reporter Kim Moo Jin (Seo Hyun Woo) tries to question that witness that saw the abduction of Mr. Park's wife, Jung Mi Sook, a murder victim believed to be killed by Do Min Seok (Hyun Soo's father) whose body was never found. A news report states Mr. Park killed Mr. Nam and abducted Hee Sung with an intent to harm.
Gong Mi Ja (Hee Sung's Mother but not Hyun Soo's biological mother) hears the same report as she drives to the hospital. Baek Man Woo (Hee Sung's Father but not Hyun Soo's biological father) strides through the hospital halls.
Doctors gather around Hee Sung's bed with Ji Won and his daughter Baek Eun Ha and mother-in-law in attendance. They discuss his treatment. They note his memory might be fuzzy. Hee Sung answers his birthday, wfie's name, but feigns surprise he has a daughter. Tearfully Eun Ha identifies herself. Hee Sung smiles and pulls her onto his bed and cites her details. Hee Sung's father arrives and asks how his son is doing. He hears the positive report. Hee Sung's father claims he's relieved.
Hee Sung pretending not to know his daughter isn't funny. He does have limited emotional intelligence.
Hee Sung's mother arrives angry. Her husband tells her to tone it down. She tells Ji Won's mother she wants to be alone with her son. That doesn't go over but Ji Won allows it and leaves with her daughter and mother.
Ji Won's mother doesn't like how his parents treat them.
Hee Sung's mother demands to know what will happen because of Mr. Park. Hee Sung's father says this could work to their advantage. He notes that Mr. Park's brain surgery might have left him unable to come back.
Team Lead Lee Woo Cheol wants to interview Mr. Park, but he's unresponsive.
Ji Won's mother leaves with Eun Ha. She gives her daughter a hug before she goes and tells her everything will work out. Ji Won plasters a smile on her face for her mother and daughter.
Hee Sung says he lied to his wife that he was visiting Do Min Seok's workshop to help Reporter Kim Moo Jin. Hee Sung's parents want to know if he can trust Reporter Kim Moo Jin. Hee Sung says he has leverage but won't divulge details. Hee Sung's father reprimands his wife to calm down and not freak out like she did 15 years ago. She doesn't like the reminder and strides out of the room.
Officer Im Ho Joon (Kim Jin Woo) tells Ji Won he's relieved things are working out.
Flashback…Ji Won watches her husband. She demands to know why her husband isn't waking. The doctor assures her his husband will wake when his body is healed enough to do so. She cries that the waiting is hard.
Ji Won asks Officer Im about Mr. Park. The doctors don't know why Mr. Park is unresponsive. The police wonder if Mr. Park is faking it.
Hee Sung's father says Mr. Park will likely be locked up tomorrow. He and Hee Sung agree something must happen tonight. Hee Sung's father points out that Mr. Park is on major pain meds and no family to request an autopsy. Hee Sung's father offers to supply the drugs. Hee Sung tells his father to do it himself. Hee Sung's father won't. He tells Hee Sung tonight is the only chance to ride himself of Mr. Park.
Officer Im wants Hee Sung's statement about his encounter with Mr. Park.
Reporter Kim Moo Jin calls Hee Sung and says they need to get their stories straight before the police interviews. Hee Sung lays out the story they will tell. Reporter Kim Moo Jin presses the witness to tell him about the abduction. She claims she was a mistake. Reporter Kim Moo Jin points out the victim was Mr. Park's wife. The witness refuses to talk for fear of retribution. She won't say who will do it but it isn't serial killer Do Min Seok. That gets Reporter Kim Moo Jin's attention.
Ji Won and Officer Im prepare to interview Hee Sung. He notices his wife is nervous. Hee Sung remembers his wife frantic cries from that night. Detective Choi Jae Sub (Choi Young Joon) enters the room declaring he's feeling better too. Detective Choi says he'll perform the interview.
Detective Choi asks why Mr. Park didn't kill him immediately. He asks what Mr. Park wanted from Hee Sung. Ji Won takes offense at the question. Detective Choi tells Ji Won to keep quiet if she's going to act as an officer should. Ji Won steps outside the room. Hee Sung claims Mr. Park tortured him because his wife is a police officer and Mr. Park hold grudges against the police for mistakes made during his wife's case. Detective Choi wonders why Mr. Park tried to down him. Hee Sung doesn't know. Officer Im suggests it is Mr. Park's grudge against the police. Detective Choi snaps at the young officer for supply a pat answer. Hee Sung points out only Mr. Park knows why he did what he did. Detective Choi admits he doubts Hee Sung's story of working at story with Reporter Kim Moo Jin. Hee Sung asks if he dislikes him. Hee Sung points out he knows Detective Choi advised Ji Won not to marry him. Detective Choi says 3 kinds of people try and get on his good side – a liar, a potential liar, or one current lying. Hee Sung suggests Officer Im take his statement due to Detective Choi's bias. Detective Choi declares Mr. Park will clarify this mess when he wakes.
Mrs. Nam calls Ji Won and thanks her for catching the killer. She claims she has information about Hyun Soo. She suggests they meet while looking at a black bag. Ji Won asks Mrs. Nam to keep the information between them. Mrs. Nam agrees.
The news reports from Do Min Seok's workshop. They head into the basement where Do Min Seok kept his victims. They show the cage the victims were kept in. The reporter says it is creepy. He finds a zip tie. He says 18 years later the nightmare remains.
Hee Sung considers if he should kills Mr. Park.
Ji Won arrives. He tells her the interview went well. He asks what she's worried about. She claims it is nothing. Hee Sung tells her to rest. Ji Won counters she can't rest while he's in this situation. She says he almost died 10 days ago. She cries that it was terrifying waiting for him to wake. She says their empty house isn't comforting. Hee Sung says they should talk. Ji Won claims she's tired and leaves.
Ji Won's Flashback…Hee Sung does not recognize her when he initially woke. He called her Hae Sue.
Hee Sung's Flashback…Hee Sung believes Do Hae Sue is sitting next to his bed. Hee Sung tells her to live a normal life and never look for him.
Ji Won's Flashback…Hee Sung promises not to live as Hyun Soo.
Ji Won struggles with what he said and what is means.
Nice that he revealed himself.
The director tells Do Hae Sue (Do Hyun Soo's sister) that all the reporters at the filming location are disruptive. She agrees to quit. She thanks him for not berating her about keeping quiet about his past.
Flashback…A young MJ snaps that Hyun Soo reminds him of her father.
The witness isn't happy that Reporter Kim Moo Jin won't leave her alone. She demands to know how can guarantee her daughter's safety. The daughter arrives and orders Reporter Kim Moo Jin to leave.
Hee Sung considers what to do. He calls his fake father and says he'll commit the crime of silencing Mr. Park.
Ji Won goes to the police station and takes a briefcase to collect forensics samples with. She looks at the old case file of the foreman's murder, the murder Hyun Soo allegedly committed. She reads about Hyun Soo's antisocial behavior.
She enters her husband's workshop. She stares at the trap door to the basement.
Hee Sung dresses in orderly's uniform.
Ji Won breaks the lock and lifts the trap door to the basement. She enters the basement and turns on the light.
Hee Sung's father gives Hee Sung the drugs to kill Mr. Park. He warns him not to leave a mark.
Ji Won sprays her husband's workshop.
Hee Sung (Hyun Soo) walks to Mr. Park's room knowing the guard schedule per his father. He suggests the officer take a break while he changes the dressing. The officer leaves. Hee Sung stands over Mr. Park's bed. Mr. Park opens his eyes and looks at Hee Sung. He says he's been waiting for him. Hee Sung shows Mr. Park the drugs. He asks where his wife's body is buried. Hee Sung counters he learned his father was a serial killer just like everyone else did by watching the news. Mr. Park hoped Hee Sung would tell him the truth. Hee Sung points out Mr. Park tried to ruin him. Mr. Park says he only knows rumors about him and could be wrong. He feigns regret for killing Mr. Nam and torturing Hyun Soo. He tells Hyun Soo to quick about it. Hyun Soo fills the syringe with the drug.
Ji Won sees the illumination of figures on the floor from the dye she sprayed. She finds a zip tie. She recalls the reporter that found the zip tie in Do Min Seok's basement cell.
Hyun Soo puts the syringe to the IV. He asks what Mr. Park felt when he learned his wife was dead. Mr. Park is surprised by the question. Hyun Soo asks again. Mr. Park gets angry and demands to know why he wants to know.
Hyun Soo remembers his wife's emotional outburst. He says he wants to know.
Mr. Park says he wanted to die but didn't because he had to find his wife and put her in a safe place. Hee Sung points out his wife was dead and wouldn't know the difference of her final resting spot. Mr. Park says he wanted to change what people said about his wife. Hee Sung tells him goodbye and injects the drug in the IV.
The police officer overhears the nurse thanking orderly for changing the dressing for her. The officer asks them if they are talking about Mr. Park. He introduces himself. He's taken aback when he's told the dressing need only be changed once a day. He rushes past patient Hee Sung. He finds Mr. Park alive and well in his room.
Flashback…Mr. Park is shocked when Hyun Soo says someone gave the fish charm that Mr. Park's wife carried to his sister at their father's funeral. She in turn gave it to him. Mr. Park asks why he didn't say this before. Hyun Soo retorts Mr. Park would have abducted and tried to drown his sister too. Hyun Soo wonders who gave his sister the fish charm. Hyun Soo suggests that the witness that saw his wife abducted and the alibi he gave his father, were both telling the truth. Someone else killed Mr. Park's wife. Mr. Park asks if Do Min Seok had an accomplice. Hyun Soo suggests Mr. Park find the real killer. Mr. Park begs Hyun Soo not to kill him. Hyun Soo counters he turned the drip off. Mr. Park asks why. Hyun Soo says Mr. Park kept his mouth shut about who he was. Hyun Soo notes the police want to know why Mr. Park tortured him. He tells him what to say to the police.
Well done scene!
Ji Won remembers the police reports about Hyun Soo's lack of emotional intelligence.
Flashback…Hee Sung handles a crying Eun Ha unruffled.
The news reports that Mr. Park was questioned by the police and stated he harbors grudge against the police for mistakes made during his wife's case.
Hee Sung realizes his watch is missing. He flashes back to losing it during the altercation with his wife in the barn.
Reporter Kim Moo Jin and his boss discuss the questions to ask the witness that saw Jung Mi Sook abducted. The cameras roll. She asks she can't forget Jung Mi Sook's face a desperation when she was abducted. Reporter Kim Moo Jin sets the stage. He asks why she changed her statement about the abduction. The witness puts a tape recorder on the table. She says it is from her home answering machine.
Hee Sung picks up Eun Ha from daycare.
Ji Won arrives to speak with Mrs. Nam regarding the information about Hyun Soo. Mrs. Nam pushes a black duffle bag. She says this was Hyun Soo's bag. She believes her husband kept it believing Hyun Soo would return on day. Inside the bag is the Walkman with the fish charm. Ji Won declares she'll be able to Hyun Soo.
Reporter Kim Moo Jin plays the tape a male voice says "Lady. Don't stick your nose where it doesn't belong. I know where you live and work. Do you know why the Yeonju foreman died? He stuck his nose where it didn't belong."
Mrs. Nam worries that Hyun Soo is roaming at large. Ji Won says that no one saw Hyun Soo murdering. Mrs. Nam counters that Hyun Soo isn't normal. Ji Won counters that psychopaths can't care for others. She points out Hyun Soo had a dog for 10 years and cared for the dog's puppy when it was born. Mrs. Nam declares Hyun Soo murdered the Yeonju foreman and fled. Ji Won agrees. But she's only willing to have Hyun Soo be punished for the crimes he committed. Ji Won says she investigates with her eyes and brain.