‘Doubt’ K-Drama Episode 4 Recap & Ending Explained: Who Killed Su-Hyeon?

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Okay, Doubt has me in serious doubt of my brain capacity because my gosh is this series confusing. I guess that’s what an intriguing mystery should look like—always keeping you guessing, never truly knowing what’s going to happen next. In episode 4, we’re hit with a new twist in the tale that nobody was expecting. To me, it looked like it came out of nowhere, but it does make Ha-Bin’s actions seem more reasonable. Anyway, episode 4 begins with a flashback to when Min-A was still alive and saw Young-Min with the bag of cash. This is probably why he thought she was the one who stole the bag, because she saw him look through it, and I’m guessing nobody else did. Young-Min beat Min-A up for stealing the cash even though she hadn’t stolen it; however, after the incident, she takes the cash and runs away from the shared home. This is when Ha-Bin sees her on the subway. The flashback ends with Ha-Bin saying she’s going to kill Min-A, leaving us more bewildered than we were before. Anyway, let’s see what the big reveals of episode 4 of Doubt are.

Spoiler Alert 


Does Ha-Bin Get Arrested? 

Next, we move on to the part where Ha-Bin goes to the motel with the girls after the cops show up, and she asks Min-A for her number because she claims she wants to join a gang too. This is all strategy because when Ha-Bin threatens to call the cops after discovering a bunch of phones in Min-A’s possession, Min-A gets furious, and they get into a physical confrontation. Ha-Bin purposely kicks the other girl’s phone under the bed so that while Min-A’s in custody, she can put a tracker on that phone. Now it really looks like Ha-Bin might’ve killed Min-A, but maybe the girl’s actually not dead and there’s something else going on here. Anyway, we then flash forward to the present day, where Tae-Su learns about the theory that it’s a serial murder. When Detective Oh Jung-Hwan asks where he found the evidence, Tae-Su doesn’t answer. He’s busy drawing up his next move to imprison Ha-Bin in his head. 

Tae-Su goes home and directly tells Ha-Bin that he submitted her keyring as evidence. She tells him he should’ve trusted her when he’s basically just pointing a finger at her and saying she did it. Tae-Su tells Ha-Bin to cooperate with the cops and go to them immediately rather than wait for the investigation to start. Ha-Bin claims she’s going to get changed, but actually, she calls the police over domestic mental abuse from her father. This way, she won’t have to go to the cops, and she’ll be away from her dad, at least for that one night. In the meantime, Young-Min catches the girl who snitched to the cops and locks her up in the basement. This reminds Sung-Hee of another girl who was locked up, presumably Su-Hyeon, but we’ll get to that in a bit. 

Just when you think the cops are going to come to arrest Ha-Bin, they instead go to Young-Min because there’s some evidence against him, even if not incriminating. But the cycle repeats itself because since there’s no evidence against Young-Min, they can’t really keep him in custody. However, when Young-Min and the other kids are taken in for interrogations, Tae-Su is able to question Young-Min because the case against him about bribery is called off. Tae-Su then uses his magical profiling skills and manipulates Young-Min into almost admitting that he killed Su-Hyeon. Young-Min falls for the trick briefly, saying something like “How could there have been bruises on the body when it was buried a whole year ago?” But this is obviously not enough until Young-Min makes an actual confession for a crime he did not commit. Oh, and there’s a random mysterious man on a bike too. I wonder who this is and who he’s following. 


Who Killed Su-Hyeon?

In the meantime, the detectives meet the teacher who had a keyring from Su-Hyeon. He tells them what she was like and why she took a break from school. This man certainly looks suspicious, and they make it really obvious that he might’ve done something. In a picture found of Su-Hyeon and Ha-Bin at Su-Hyeon’s home, the cops see Ha-Bin’s face scratched out completely. Okay, to make things clear, let’s just connect the dots from the last bit of the episode to understand the overload of information we got. Now this same picture was on the lock screen of the phone that Ha-Bin had. Only the phone isn’t Su-Hyeon’s or Min-A’s; it actually belonged to Ha-Bin’s mom, Yoon Ji-Soo. Tae-Su also learns that the number that’s on the call log the most belongs to his wife. This leaves him perplexed. Su-Hyeon wasn’t well off at all, and her father definitely abused her. Everyone also believed she didn’t have a phone, but in the picture found in her house with the face scratched out, she’s holding one. This phone was probably given to her by Ha-Bin’s mom. 

At the end of Doubt episode 4, Sung-Hee meets with the teacher Jun-Tae from school who had the keyring from Su-Hyeon. It looks like there’s something deeper going on here, and these two are lovers. On the other hand, Young-Min finally learns that Ha-Bin is after him not because of Su-Hyeon or Min-A but because the phone found in her room belonged to her mom. So this is basically a revenge thriller, where Ha-Bin is after the people who blackmailed her mom into paying them money. But what were they blackmailing her with? It’s video evidence that Ji-Soo buried Su-Hyeon and most likely killed her. I guess it was some sort of accident, but we’ll find out. Maybe Su-Hyeon knew some secret about them. I don’t even know; all that’s clear is that Ha-Bin knew what her mom had done and blames the runaway gang for having killed her. Which is why she might’ve taken things into her own hands and killed Min-A. But we’re still not sure there. On the other hand, what is up with Jun-Tae? Was he in a relationship with the minor Su-Hyeon? A lot is left to be revealed, but we’re only at the beginning of the show, so we’ll find out soon enough.



 

Ruchika Bhat
Ruchika Bhat
When not tending to her fashion small business, Ruchika or Ru spends the rest of her time enjoying some cinema and TV all by herself. She's got a penchant for all things Korean and lives in drama world for the most part.

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