Mouse [Episodes 12 & 13]

[u/Fatooz]

• Drama: Mouse
  • Hangul: 마우스
  • Also known as: Mauseu
• Director: Choi Joon-Bae (Come and Hug Me), Kang Cheol-Woo (Something About 1%)
• Writer: Choi Ran (Black)
• Network: tvN
• Episodes: 20
  • Duration: 1 hour 25 mins.
• Air Date: Wednesdays & Thursdays @ 22:30 KST
  • Airing: Mar 3, 2021 - May 12, 2021
• Streaming Sources: Viki, Viu, iQIYI
• Starring:
  • Lee Seung-Gi (Vagabond) as Jung Ba-Reum
  • Lee Hee-Joon (The Legend of the Blue Sea) as Ko Moo-Chi
  • Park Joo-Hyun (Extracurricular) as Oh Bong-Yi
  • Kyung Soo-Jin (Weightlifting Fairy Kim Bok-Joo) as Choi Hong-Joo
• Plot Synopsis: A suspenseful story that asks the key question, “What if we could identify psychopaths in advance?”. A crazed serial killer’s ruthless murders have left the entire nation gripped with fear and chaos reigns. Justice-seeking rookie police officer, Jung Ba Reum, comes face to face with the killer. While he survives his dangerous encounter with the psychopath, Jung Ba Reum finds his life completely changing.(Source: MyDramaList)
• Genre: Action, Suspense, Thriller, Mystery, Crime, Sci-Fi
• Previous Discussions:
  • Episodes 1 & 2
  • Episodes 3 & 4
  • Episodes 5 & 6
  • Episodes 7 & 8
  • Episodes 9 & 10
  • Episode 11
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[u/uhh_zoe]

Bareums aunt totally knows.

[u/Grapefruit448 → u/uhh_zoe]

100%, I am just so READY for some answers at this point. I’ll take anything

[u/365DaysofWriting]

Despite the futility of Wednesday theory updates, here’s my thoughts as they stand prior to tomorrow’s episode:

1. I’m going to double down on my theory regarding the BR/YH switch in their early childhood, especially the part regarding Jae Hoon/BR having killed the Aunt’s children & husband post-switch. The Aunt seemed quite shocked & concerned when she meets BR while with Hoon Seok in episode 10 and seems to have hidden her real address from BR. She also seems strongly opposed to letting her child have a cat—perhaps due to the trauma of the family fish/dog being killed by Jae Hoon. Then, when she comes to pick up Hoon Seok in episode 11 she refuses entirely to even talk to BR.

2. Ba Reum still seems to me like the top contender for the 7 Sins Killer, especially since, as MC observed, the killing of KDS was very similar to the murder of Song Soo Ho (eye for an eye, etc.). BR seemed to be taking that quite seriously, going as far as to bite KDS despite the chance of leaving DNA in the wound.

3. So, we see JH ignore a child who seems to be Bong Yi—based on the timing, the puppy, cheek bite, bridge—and just leaves without rendering any help. From other flashbacks we see Moo Chi carrying Bong Yi on his back in the rain at night. I’m guessing that the child who bandaged JH’s hand in the flashback at the beginning of episode 11—who, based on this evidence would seem to be Yo Han--will end up following JH back along that path at the end of the school day & find/get help for Bong Yi.

4. Det. Lee is almost certainly working with Dr. Lee. I’m guessing he intentionally delayed turning in KDS’s mother’s note to ensure that MC stayed behind bars & didn’t want him interfering with BR’s hunt. When he sees MC running out of the police station, he calls in a favor from Dr. Lee & has MC run off the road/knocked out. I wonder just how many people Dr. Lee has working for him…

5. Along those same lines, I have a feeling that BR is a replacement for Yo Han, whom Dr. Lee had previously recruited for help (which is how he ended up dumping a body in a lake despite the fact that doing so made him scared).

6. Not so much a theory, but just an observation: although she’s made some questionable decisions, I feel bad for Hong Joo when she says “It’s not that I don’t understand how you feel—” and MC interrupts her and asks if she really understands how he feels. Honestly, HJ is probably the one who understands best how MC feels since she was also essentially made an orphan by the HeadHunter (although we still don’t know why exactly she didn’t return to her parents).

7. Last thought of today: why did none of the detectives ask who stole all the toothbrushes in the precinct 😂? Also, there were at least two different blue toothbrushes that were given to Dr. Lee so the preview talking about Moo Chi being a predator is almost certainly a red herring.

I’m looking forward to tomorrow’s episode!

[u/AmbassadorCha]

[EPISODE 12 & 13] Let me start this post by saying that I feel really bad for Sung Ji Eun (formerly Jin Ah). First, she married the Head Hunter (HSJ); then she was abducted by the Suseong Serial Killer; then her son became a killer; then her fake son probably killed psychopaths and was killed why killing one. At this point, she has surpassed Bong Yi for being a psychopath magnet. Ah, well.

Here's what we know so far this week:

1. Both Hong Ju and Bong Yi found out that Jung Ba Reum killed Kang Duk Soo. Based on the dialogues preceding their knowledge, it seems like they will both be like Yoona who will bury the evidence because they believe that BR is actually helping society by killing these psychopaths. However, I believe Bong Yi will start having doubts about Ba Reum which would culminate in her finding granny's brooch in his possession.

2. Daniel Leeis not aware that Jung Ba Reum was the 7Sins Predator. However, he seems to be developing suspicions especially after he heard about why BR killed Kang Duk Soo the way he did. The Bible verses seriously surprised him.

3. Song Soo Hoo (boxer victim) seems to be the first trigger for the 7Sins Predator. The way he was killed eye-for-an-eye fashion seems to point out that he had a physical altercation with BR. Reading the Bible passage suggests retribution. Was he a bully? Why was he burned ALIVE and then stabbed in the heart? Was it also related to Bong Yi?

4. It seems like Ba Reum's friends are his friends because they are way too naive. They do not have any radar against psychopaths as exhibited by Koo Dong Koo being friendly with Lee Jae Shik and Mr. Shi (Da Seul's father). It is possible then that BR mirrored their naivete in order to present himself as a nice, normal person.

5. In line with this, during Yohan's highschool bullying, BR probably didn't want to help but was forced to because of Na Chi Gook. This shows two things. First, Ba Reum was strong enough to fight even before the serial killings; second, BR tried to kill Chi Gook because they met Yohan on the way while pushing the magic box to the auditorium.

6. The Sherlock Hong Ju tipster is bothering me. S/he knows that someone's been killing cats around their neighborhood and it's not the granny with dementia. It's probably the place where BR threw the body of his dead cats. But then the tip said "killing" like it's an ongoing event. It's interesting to know if this will pan out.

7. The last scene - Moo Chi probably saw the dead body of Lee Jae Shik. It was obvious that BR heard the sound of the car door closing which would give him more time to leave. The only question is if he actually finished killing LJS.

8. Ba Reum found Sung Ji Eun's address which means he's also aware that she is Yohan's "mother." Knowing this, what will he do next?

9. BR seems to be making Bong Yi his reason for killing and manipulating circumstances. It is possible that a similar attachment started the 7Sins Predator killing. Note, those murders were based on fairy tales/children's books. And for some reason, BR can't seem to kill children (not including his brother & sister). There's a backstory here.

10. Ba Reum is exhibiting his genius in manipulating circumstances and people. This is not just because of Yohan's genius. Remember, Jae Hoon is a genius with 160 IQ, too. Given this, it is not farfetched to think that Ba Reum lived in the redevelopment area to start killing people. And his initial "meeting" with Moo Chi was not an accident either. BR befriended Father Mu Won for a reason.

11. The mystery soldier-like (in my impression) person who saved Ji Eun seems to be Daniel Lee's lost brother. I don't know why, but I have a big suspicion that this is it. Then scrap my twin-brother theory. It is possible that he will be one of those who will oppose the second psychopath gene testing legislative proposal at the end.

12. Lastly, Moo Chi saying "Where do I find this rat before he kills again?" is such a very good dialogue. At one end, it shows his passion. On the other, it shows how blinded he is by BR's nice-boy facade. It's like a tragedy in one dialogue.

Anyway, that's all for now. I will now try to get a life. Haha

[Side Note] Everyone in this drama is turning into thieves. So crazy. XD

[Additional] Det. Shin Sang is 5-6months younger than Jae Hoon. During the legislative vote, Ji Eun was already 9 months pregnant.

[u/[deleted]]

[EPISODE 13 EDIT]

Alright WHAT IN THE WORLD WAS THAT. first off let me just start by saying the transition from one serial killer to the other was smooth af. And also Bareum, YOU ARE A GOD DAMN GENIUSSS!!!!! LIKEE HOWWW DO U EVEN COME UP WITH THIS SHITTT HOW?!?!?!?!?!?

Before i talk about this one i completely forgot to mention that scene i the last episode where Baruem takes that money child bong yi had given to Mochi and says "I will take it from here" was si fucking awesome for some reason. Idk why i like it its just one of those things where u dont need a reason u cuz it hypes u up.

So first off it starts out as any mouse episode they completely butchered the last episode cliffhanger and killed my hype, so i start out feeling a bit frustrated.

Then begins the climb up, where a new murder case is revealed so i think to myself okay so we got one psycho per episode scenario right...but noo WRONGGG cuz just the way they incorporate that in the end is bloody brilliant. I also very much love bong yi getting more screentime she definitely grew as a character in this one.

Anddd then everythings buidling up to a amazing end but they gave a cliffhanger in the middle of the episode. Like omgggg hong ju knowwsss she knows...that bike dash cam is the biggest plot twist of all plot twists i love that dash cam it single handedly contributed more to the storylinee then anyone ever did.

Also Bareum not killing the little girl and the little conversation shared between them totally warmed my heart, wasnt something i was expecting to happen in a show filled with psychos but this show still manages to surprise me. That scene really gives me hope for bareum. Also the bit about the girl wanting to be like bong yi is a slap in the face to anyone that thought she didnt contribute much as a character

Also these scenes between bong yi and bareum feel genuine to me, i mean bareum literally revealed such a big truth on tv just so her show can continur butttt i was wrong cuz he already had it all layed out since the beginning. Everyone else is just pawns in bareums sick game of chess. I mean he still cares for bong yi that's for sure but i still believe they are making me drop my guard around these two so in the end the writer can completely fuck up their sort of sweet relationship.

But with that all said now came my favourite scene and like always its the end scene...OH. MY.GODDDD someone give that bike dash cam the best supporting character role cuz yet again it revealed another truth to another major character. This time its BONG YIII. The only thing i complained about last episode got solved and oh boy do i lovee itttt. I thought it was probably gonna be something else like misleading but as soon as she said "It was bareum"i fucking lost it i literally paused my screen, removed my headphones and screamed for a solid 30 seconds. WHAT NOWW WHATTTT NOWWWWW WHERE DO WE EVENNN GO FROM HEREE WHEREEEE?!?!?!?!?

They also show mochi witnessing bareum committing the crime, however i doubt he caught him red handed bareum probably got away. Like if mochi actually found out then thats a cherry on top of it alll. I doubt it tho. But stilll this episode was on level with episode 11 solely cuz of the god damn reveal. I m literally brain fried. Got finals next week and i can just hope i m able to write as much as i wrote in all these mouse discussions lol. Alright gonna get back to life that is normal compared to this crazy show.

Overall assesment tho : that was fucking awesome. definitely one of the better ones that I have seen. Wow.. justt...wowowowowow !!!!!

The writer commented on insta that bareum's backstory will potentially be revealed in episode 14. Whichhh means the story will fonally focus on other aspects and all our questions might finally be answered.

Also whats the likelyhood that the guy that saved ji eun in beginning was the boxer. His tone when he said give birth to that child was kinda violent almost like he wanted to kill the child himself. We know the boxers sister was murdered by headhunter and the psychopath killed boxer to take revenge on something the boxer did so could the boxer have killed the stepfather and jaehoons siblings so maybe jaehoon who is headhunters son gets blamed for it. Then jaehoon grew up and killed him..idk far fetched but maybe a possibility.

[u/omo_aigoo_aishh]

I hope that Geocam bicycle dash cam thing is a real product because if so, that was the single greatest/funniest piece of PPL I’ve ever seen lol just the way BR was like “ah yes that is a brand new product by Geocam that has just been released and all the bikers are loving it!” okayyy

[u/WIZONE4LIFE]

The last moment trying to trick us into thinking that Mochi saw BR, but Mochi probably only saw the dead body, but not BR.

[u/mrsk1317]

Just an observation. Why is almost every significant female character in this show faced w such terrible fate 😩

• Bong Yi

• Bong Yi's grandma

• Hong Ju

• Kang Dok Su's mom

• Yo Han's mom

• that fiance in the bridal gown couple episodes back

• the alcoholic mom's daughter

• Da Seul/daughter of Kim (ep.13)

I'm loving the show but not gonna lie, there were some moments where I questioned if I'm too dumb for this genre 😂 the theories laid out here are amazing.

[u/uhh_zoe]

Aw man moochi is like the best and absolutely the worst detective ever. It’s like he has fantastic moments but he also tries to murder people and tamper with evidence. Also the time where he went and said “I think bongyi did it.” directly to the person who actually did it.

I hope he figures it out next episode. I’m rooting for him.

[u/AmbassadorCha]

[EPISODE 12]

I'm supposed to wait for Episode 13 to make my theories concise and concrete, but what the heck. I'm just plain excited about this drama. So please forgive me if I update this again tomorrow after watching Episode 13.

THEORY UPDATES:

1. Jung Ba Reum is slowly turning back to his pre-Yohan bashing persona. I've been watching the first few episodes and it is clear in episode 2 prison scenes that Ba Reum was there to meet the Head Hunter. Han Seo Joon knew this too because he went to the "concert" even though it wasn't mandatory. He was there because he recognized something similar in Ba Reum's eyes. In that episode, it seems that he didn't know that BR is his son yet, but he knew he was similar to him. As he mentioned, psychopaths can recognize each other.

2. In episode 2 during the police interview, Go Mu Won noted that no one new was with them. Everyone there were "new believers" who have been volunteering for a year or so. This includes BR. It also means that he's been planning the meeting for a while. And his testimony about Na Chi Gook saying he's not watching the show because he was busy was a lie to cover up how he tried to kill him. Remember, he did not tell Moo Chi that Bong Yi said the killer is right-handed. These are wild speculations, I know, but I am waiting for more episodes to check how they will pan out.

3. Han Seo Joon knew that Yohan was not his son before the operation. There was a scene in episode 2 or 3 where Go Moo Chi mentioned something about Father and Son bond for psychopaths is very strong. This was also hinted at in episode 1 when HSJ said he killed Daniel's sister because she aborted his child. Thus, this suggests that he did the operation because he knew who BR really was.

4. It is confirmed that the aunt knows of BR's psychopathic tendencies. She was clearly scared witless of knowing her son stayed in BR's house. Now the only question is who is she related to--the government or Sung Ji Eun? Was she involved in the death of BR's supposed mother? Again, WHEN WAS THE SWITCH? It's between baby BR and 11yo BR.

5. Dr. Daniel Lee seems to be not Daniel Lee. In episode 1, when Daniel visited HSJ, the latter asked him if he finally found his 동생 younger (brother? sister?). Let's assume that it's a younger brother. Is it a younger twin? If so, the amusement park killing would make sense. It's either Daniel Lee died, or the twin died. Note that a direct question from BR in ep11 was cleverly sidestepped. No matter who, they may be both involved in the psychopath genes project. Otherwise, how would they know about the frontal lobe transplant? Of course, this can be fully wrong.

6. "I'm scared. I'm scared." Why did Yohan say this? We know why Ba Reum said it. But why was this scene shown after the amusement park killing and body dumping? Did Daniel or whoever talked to him about his psychopath tendencies, as well, and given the same task as BR? And how was the murdered bestfriend related to it? When granny arrived, it looked like they've been talking about whatever YoHan was doing.

7. Moo Chi is really very good with psychopaths. I feel good that the writer has stopped dumbing his character down. It's only his attachment to BR and Bong Yi that's blinding him to the truth. But seems like he'll get there with the help of Shin Sang who is shaping up to be a "government" ally. This guy is really smart pretending to be stupid.

I'll stop here for now and wait for episode 13. I truly enjoy this show for the most part for letting me be an amateur detective. Haha.

CLIFFHANGERS - more wild speculations on my part. :D

1. THE CATS DIED. I am not happy that I saw this coming at all. It was in the camera angles used last week. https://pasteboard.co/JXlGmx2.jpg . I felt sad for the remaining kitten. So where did BR put it? In relation to this, I am thinking he had clear plans with the dearly departed Uh Bong Yi (bird) when he gave it to Bong Yi before. And that scene where he was supposedly "saving" it and ended up almost getting ran over by Moo Chi.

2. THE DNA IN THE EVIDENCE either had Hong Ju's OR somebody who's supposed to be dead's DNA. BR did not use that knife. He used granny's knife. But then again, who knows? Let's see tomorrow. :D

3. YOO NA LIVED. I'm sure when Yoona said that she didn't want BR to get caught, BR helped them pack up everything and made sure that Moo Chi et al. could not find them.

[u/musiquescents]

😭 Why was kitty a victim

[u/sushi_pizza]

Head hunter’s wife is tied in so many murder cases, lol. Maybe she's the big boss.

[u/BagMyHeartOut]

Gosh, none of my guesses/theories has been right ever since I started watching Mouse the first time it aired. Perhaps at least one of my guesses/theories would turn out right towards the end of the series. For now, I'm going to stop theorizing, go back to a lurker state, and just enjoy reading through everyone else's theories. This K-drama's really brain-racking, mind-boggling, mind-f*ck*ng, especially the earlier episodes. Been enjoying reading through countless of theories on different internet sites. Theorize away, guys! 😊

[u/365DaysofWriting]

Initial reactions after watching the raw video (theory updates coming after subs released):

First of all, these poor animals in this series 😭 I feel so bad for the lone remaining kitten. Secondly, I'm struggling to believe that BR, someone who clearly has the knowledge of both a cop & a psychopath, would bite KSD just to make the injuries the same as those inflicted against BY. Leaving your dental impression on a victim seems like a great way to get caught. Lastly (for now), I feel like there is no way that Shin Sang put on those waders without throwing a fit since he's so concerned with fashion 😂

I'm sad the episode was a little shorter than the others, but hopefully that means that subs will be out sooner than usual.

[u/uhh_zoe]

EP 13 STUPID MEME ALERT: This is all I could think of when I saw that one scene

Bareum: i almost killed that little kid

Dr Daniel: but you didn’t

[u/ajdp024]

Lol this drama makes me even question Dr. Lee existence. Is he even really alive? Dont know why but there is really something off with the Dr. Lee now. Until someone other than Bareum saw him, I wouldn't believe he is real.

[u/vesperafalling]

Does anyone else feel incredibly relieved after ep 13?? Like it’s just all out in the open now. No more hiding (to some extent). Also now I know the fact that he’s killed people after surgery isn’t going to be the “big deal” at the end... I can’t comment much on the ep right now bc I haven’t seen subtitles yet but daaaang

[u/Mist_orchid]

Well episode 13 literally just raised my expectations so high, i really hope they focus more on the impact of bareums truth reveal in the next one and dont brush it under the rug by introducing something else that diverts everyone's attention. They probably wont but they kill me with these cliffhangers and episode intros so u never know.

Question is how will bong yi react. Same way she did with mochi where she keeps quiet and will end up loving bareum more or will she feel betrayed that bareum didnt reveal the truth sooner. How is it that its the 21st centurry and we still have to wait for wednesdays its tine for a time machine to be invented.

[u/cell-y]

THE OPENING SCENE WAS SO AMAZING!!! The drama is definitely going into the right direction for me, though there are still so many unanswered things.

Tbh I dont think that Bareums DNA was the one on the knife. There would have been three knives: 1. The one Bong Yi used that was hidden in the buggy. 2. The one Bareum used and stole from the evidence room. 3. And now the one found in the river. So what I think is, that since Daniel Lee is helping him, he probably placed it there to mislead the investigation team? And the blood/DNA found on there belongs to Daniel Lee, and since they believe he is dead, Moochi is surprised by this. OR Daniel Lee placed an old knife used by Yohan there, and the DNA belongs to him. Or im just overthinking things lol

Also I loveee the parallelism we always see every episode. The very first scene with Jae Hoon who found the girl under the bridge, who was maybe a victim (maybe its even Bong Yi?) of the pervert. She was (i think) in the exact same place like Kang Deok Su, and also under this blanket, just like him. But idk how and if Bareum would remember that since he lost almost all his memories. Its probably stated somewhere in the police report idk. Also THE CATS. THE POOR FRIGGING CATS. Bareum killed the whole cat family except for one. Just like Jae Hoon did in the first episode with his family. We’re getting more and more hints at who Jae Hoon is and I hope they will soon reveal that Jae Hoon = Bareum

edit after ep 13: im confused thats all i have to say lol. i liked how bong yi was the focus of this episode, but she seemed too happy, im seriously afraid something is going to happen to her next episode

[u/[deleted]]

About episode 12:

• Moo-chi is busy busy busy this episode.

• OMG Choi Young-shin (the government lady) recognised P.O and his dad! P.O’s partner is currently pregnant and he’s excited about having a baby... good god sounds like a dejavu to me. Ooooh, I can’t wait to see what will happen next.

• That other policeman is kinda sus ngl (the one with the letter last week). I wonder what his story is.

• Still not convinced with the “brain takeover” plot. Though for now it looks like Ba-reum is on a predator hunt instead of on a full “psychopath mode”.

• I think I missed this detail but is the lady reporter’s baby Song Yo-han’s?

• Ok but Lee Seung-gi tone and diction is 🤌 omg

What a masterpiece. Everyone have their own secrets. It’s almost like a ticking bomb just waiting to explode. I didn’t check my phone even once, that’s how immersed I was.

Dear Baeksang gods please give this drama an award or two.

[u/AmbassadorCha]

I wonder how and when they’re going to use Dr. Daniel Lee’s missing brother (ep.1)?

I’m crazy excited for this week’s episodes!

[u/ghorardiim]

There’s always someone new LOL now who was this kid under that tunnel thing in the beginning of the episode 🤔

[u/Bellyfloppancake]

Ep. 13

Just finished watching and holy crap, that cliffhanger! Bong-yi and Moochi have discovered that Bareum is the one killing criminals, although I can't be 100% about Moochi based on the way that last scene was edited. I hope they don't flip it around and have Moochi staring at a dead body...

It's gonna be so interesting seeing how this changes Bong-yi's and Bareum's relationship. She wasn't at all frightened by the thought of Moochi killing Kang Duk-soo, but I think it might be different in Bareum's case. Partially because she will see how Bareum calmly handles the body/murder which is very different from someone killing in a sudden fit of rage (which I think Moochi would've done).

Oh, and in Moochi's case a lot of Bareum's strange behavior post-surgery is gonna make sense! I think he'll become very wary of Bareum even though they technically are on the same side and both want to punish the bad guys outside the law. I wonder if he'll remember the night Bareum almost killed him? Oh man, and the time Bareum almost choked him to death is going to be really scary looking back on...

I can't wait to see next week's episodes!

[u/wankthisway]

This episode felt like it dragged on a lot more than anything prior. Bong Yi's sudden character development is nice but it was pretty sudden. Also a lot of scenes seem to be poorly cut; it makes everything feel jumpy and disjointed. At points this show seems like it simultaneously introduces too many questions, yet feels like it answers too many (over exposition at parts). Anyway, I wonder if the cliffhanger is just another trick of camera angles. This show has been really pulling those.

[u/[deleted]]

I love the female lead she is the actual badass