01x09 - Reset Man

[bunniefuu]

THIS IS A WORK OF FICTION THAT ADDS
IMAGINATION TO SCIENTIFIC KNOWLEDGE

ALL PEOPLE, LOCATIONS, ORGANIZATIONS,
AND INCIDENTS IN THE DRAMA ARE FICTITIOUS

STAFF ENSURED THE SAFETY OF MINORS
IN THE FILMING OF THIS DRAMA

EPISODE 9
RESET MAN

You and I

should give love a try.

What?

Detective Geum!

Are you all right?

What? Oh, yes.

I've mastered the art of landing, you see.

My gosh. That was so scary.

I really thought you were done for.

Why would you share something so huge

while we're in such a dangerous spot?

Please don't tell me

you were trying to end my life.

Why would you say that?

I'm being serious.

Don't you think this
location and situation

are a bit bizarre for such a serious talk?

I put a lot of thought into it.

You see, Dr. Brain coached me.

He said you're more likely to say yes
if I took you somewhere dangerous

and got your heart racing.

That darn Dr. Brain.

Dr. Brain! Seriously.

It's been a long time.

You know who I am, don't you?

Long time no see, Han Yeon-hui.

How's life as a prosecutor?

It is what it is.

I got nervous
thinking you didn't recognize me.

I kept running past you.

How could you not even say hi?

I was lost in my thoughts
and didn't see you.

Were you thinking about brains as usual?

No.

I was thinking about love
for the first time in my life.

Then you showed up.

I see.

Are you busy?

How about a cup of tea?

I'm sorry. I don't think I can.

You must be busy.

Some other time, then.

Sure. It was nice to see you.

Take care.

Bye.

He's still the same.

And you're still racing.

I guess I have no pride.

Are you sure you're okay?

Yes, I'm just fine.

I had a wild childhood.

Falling off a cliff is
the least I've been through.

You saw how I landed, didn't you?

"I'm alive."

Since you're alive, I'd like an answer.

Is it a yes or a no?

Captain Seol.

You make this sound like an interrogation.

I'm feeling impatient, is all.

I don't know when I'll go back
to my old timid self,

so I want to settle things
while I'm not myself.

This is just...

Listen, Captain Seol.

I'm only saying this
because I don't get it.

Why me?

You're better educated than me,
you're my superior,

and you're beautiful.

What do you see in me?

It's your smell.

My smell?

I don't use cologne.

Do I...

-Is it...
-No, it's the smell of warmth.

When I was unconscious in the hospital,

I couldn't see, and my ears were ringing.

I couldn't even speak.

But I could smell very clearly.

And whenever
a certain someone came to see me,

I could smell a soothing warmth.

I felt at ease
when that person came near me.

"This person is truly worried about me."

"This person likes me."

I could feel it.

At first, I thought it was a nurse.

But I realized the truth
when you came up to me after I got back.

"It's the smell
from when I felt that warmth."

It was you who nursed me all night
before my mom came, wasn't it?

Well, yes, but that was...

I wasn't asking you
to like me or anything.

We're colleagues,

and you were there all alone.

I stayed because I was worried.

-Then do you dislike me?
-No, why would I dislike you?

Then what's the problem?

Look, Captain Seol.

You know how messy
my situation is right now.

Or don't you?

Then don't even go there.

I know.

I know you have
a disobedient middle-school daughter.

I also know you have

a similarly difficult ex
who still has feelings for you.

I know all that.

And I still asked
because I'm confident I can take it.

So think about it and get back to me.

Will a week be enough?

Goodness.

Thank you.

Be sure to throw out the first cup
after the purifier fills up.

-I will.
-Goodbye then, sir.

-Thank you.
-Sure.

Today's his day off.

He's probably home all alone.

Shall I ask him out for lunch?

Actually,

I'll just pick up some food and barge in.

What shall I buy?

LOVE IS IN THE SCENT



IMPORTED PERFUMES

Excuse me.

Diamonds are a girl's best friend

Hey, you.

What do you think you're doing?

A parody.

A Sharon Stone

parody.

Don't do it.

Stop right there.

If you move even an inch, I'll arrest you.

Why? This isn't ill*gal.

Yes, it is. You're guilty
of harassing your ex-husband.

My gosh.

Why do you have your shoes on?

SUBSECTION CHIEF KIM

Yes. Hello, sir.

Right.

I'll be right there. Got it!

You can spin them around after I leave.

Spin them all you want after I leave.

You should see it before you go.

Me spinning my legs.

There!

You have something on your face.

Wipe that off once you're done
spinning your legs around.

This is a Marilyn Monroe parody.

Marilyn Monroe, my foot.

Why won't people leave me alone today?

I'm exhausted.

This beauty mark is supposed to
bring me luck, Myeong-sae!

Gosh, seriously.

What's with this? It doesn't work at all.

Should I return it for a refund?

Joon-young?

Open the door, please.

Joon-young.

You need to eat something.

Joon-young?

Joon-young.

Joon-young.

I won't say anything
about you playing games.

Take this inside and eat it.

Take a break and eat. You need to eat.

Are you really going to be like this?

Will you starve yourself to death
while playing video games?

Don't you think this is too much?

Take a break and eat something!
You need to eat!

If you keep this up,
I'll break the door down!

How much longer will you keep this up?

How many years has it been?

I can't take this anymore.

If you're going to keep this up, just die!

I don't need a son
who stays cooped up playing games!

Take a break and eat something!
You need to eat!

You even skipped your dad's funeral
to play games. Who does that?

Just die!

Tell your brother to eat.

If not, I'll shut down the power.
Tell him to choose wisely.

You won't listen to me either?

Do you want to see me drop dead?

Enough is enough.

It's okay.

I can do it. I'll get him to eat.

I'll make him eat today.

We're with the police.

What's your relationship
to Ms. Choi Jung-yoon?

Are you her son?

-Yes.
-Your mother

was found stabbed on a hiking trail.

Are you Kim Joon-young?

No, that's my brother.

Is your brother inside?

Yes.

Why do you ask?

He is our main suspect
for the m*rder of Ms. Choi.

We're here to arrest him.
Please cooperate.

No, wait!

That can't be.
There's no way it was my brother.

He's a homebound recluse
who never leaves the house.

He hasn't left his room in years.
How could he have hurt her?

He called to report it himself.

Mr. Kim, open the door.

Mr. Kim!

Mr. Kim!

Open the door!

Why did you k*ll your mother?

We understand
you hadn't left your room in years.

Yet you had the courage
to step out to k*ll your mother?

How do you feel?

This hiking trail m*rder
exhibits the characteristics

commonly seen in crimes
committed by homebound recluses.

Amidst the growing number of
homebound recluses who isolate themselves

in response to unemployment,
bullying, or family problems,

this case gives us lots to think about.

Reporting live from Seobu Police Station,
this is reporter Woo Jong-kyun.

Seobu Police Station?

Is the Neuroscientific
Investigation Team on this case?

It's none of my business.

Choi Jung-yoon, age 57.

The preliminary autopsy report shows

that she died from excessive bleeding
from the stab to her neck.

Her husband had died recently,

and she had two sons.

Her elder son, Kim Joon-young,
called the police and confessed.

Is this the police?

Yes, how may I help you?

I k*lled that woman.

I'm the one who k*lled her.

Pardon me?
Are you saying you k*lled someone?

Yes.

Who is "that woman"? Who did you k*ll?

My mom.

Where did this happen? At home?

No, not at home.

They first thought it was a prank call.

But then the mother's body
was found on the hiking trail.

He followed her on her
early-morning hike and k*lled her.

He was also caught on security cameras.

Yes.

I can't tell who's who these days
because of those masks.

It looks like the same hoodie.

His height and physique
are similar to those of our suspect.

Oh, there's a witness?

Yes, they're looking for her.

-What about the m*rder weapon?
-That too.

What was his motive?

The suspect is addicted to games.

He's a homebound recluse

who doesn't leave his room
when someone else is home.

Apparently, he was
holed up in his room for five years.

Five years?

A homebound recluse his home
after five years and committed m*rder?

Why?

His brother said the suspect and the mom
had a fight the day before the incident.

My mom told him to die
if he was going to keep living like that

and hurled insults at him.

I thought she had gone too far,

and maybe my brother snapped.

So there's physical evidence
and a confession.

It seems like a straightforward case.
Why was it transferred to our team?

They couldn't get him to cooperate.

They think there are issues
with his brain.

Being a homebound recluse
isn't a brain problem.

It's a psychological problem.

You see,

he keeps claiming to be 17 years old.

Seventeen?

What? But he was born in 2001.

Let's see. That would make him 22.

Exactly.

I guess we should talk to him.

All right. Name, Kim Joon-young.

Age...

I'm 17.

You're 17?

Did you just say that you're 17?

Yes.

Did being home all these years
make you lose your sense of time?

What's your
resident registration number then?

It's 010811-3004197.

I see you don't have that mixed up.

If you were born in 2001,
that makes you 22 this year.

You're wrong.

I'm 17.

Why am I at a police station?

Wait, h*-young.

Where's my little brother?

Mr. Kim, what's the matter?

Sit back down.

When did I get so old?

He really seems to believe he's 17.
But why?

I can't answer why,

but I don't think
he's a homebound recluse.

What could he be
if not a homebound recluse?

Why does he keep
asking the same questions?

It's like his memories
keep resetting to when he was 17.

A reset, huh?

Maybe my memories are resetting too.

Why do I keep thinking about that guy?

Tell me about it.
I keep thinking about him too.

Same here. I also have someone on my mind.

This is boring.

Hello?

Dr. Shin.

Are you seeing some success
in solving the homebound recluse case?

Goodness, Dr. Hwang.

It seems you're quick to know
everything that's happening out here.

But I guess
you haven't heard this one yet.

I am no longer
a consultant for the police.

What a shame.

Why did you quit such intriguing work?

Those police cases seemed like

a vivid treasury of neuroscience
you'd never encounter in a lab.

But I guess
you can decide that for yourself.

Anyway, I hope you haven't forgotten
the date of our next meeting.

I'll look forward to it.

It's time for me to get down to business.

A "treasury of neuroscience"?

I guess he's right.

"The homebound recluse case."

A HOMEBOUND RECLUSE MURDERS MOTHER

The lack of updates

must mean they're struggling.

Whatever. It's none of my business.

Dr. Brain.

Dr. Brain!

What was that? Am I hearing things?

Dr. Brain!

It's just me.

What is this? Why are you here?

You said moving around
helps the brain work better,

so I'm exercising.

What I'm asking
is why you're doing that here.

Because I was hoping to run into you.

And I did!

What a coincidence.

As if it was a coincidence.

Aren't you going to exercise?
Why are you heading back?

Exercising is obviously
not in the cards for me today.

Really? Great.
Then let's head inside and talk.

We got another weird case.

Forget it. It's not my concern anymore.

A homebound recluse
who stayed home for five years

followed his mom on her hike
and k*lled her.

Is that so?

But he keeps saying he's 17 years old.

He's 22, but he claims that he's 17.

And he seems to actually believe that.

Also, at certain points in time,

he asks the same questions over and over,

so we've been calling him the Reset Man.

There seems to be
an issue with his memory.

Could he have dementia?

Well, I do have a theory in mind.

Really? No way.

I knew you'd know immediately.

What is it?

That...

I can't tell you for free.

Wait. Come on, Dr. Brain.

Come on, Dr. Brain!

Okay, fine.

I'll get you a gift, all right?

Dr. Brain, I've come back with a gift!

Ta-da. Here's your gift.

I've never shuddered so hard
at a flower before.

Get lost.

Okay, fine. Here's the real gift.

Here. My brain.

I'll donate it.

I know you're crazy about brain donations.

Well, I wouldn't say I'm crazy about it.

Do you need my help that badly?

Yes, of course.

-Try groveling a bit more.
-Do you have to be so petty?

Strike that.

Dr. Shin, we need you desperately.

I will even give you my brain.

Okay.

But you'll have to
come somewhere with me first.

Huh?

All right.

Here you go.

This must not have been an easy decision,
so I thank you for your donation.

There's no need to thank me.

I've always been
interested in organ donation.

And I was so in need of Dr. Brain's help
that I decided abruptly to do it.

You heard him.

I'm the reason he's donating his brain.

I hope you haven't forgotten
that my efforts were key

to Brain Hub receiving
more brain donations than anywhere else.

Yes, I'm aware of it, Dr. Shin.

Now, how about a photo
to commemorate the day?

-Sure thing.
-Right.

-Can you stand there with the agreement?
-Got it.

Are you all ready?

One, two, three.

Looks great.

You two should take one by yourselves.

-Sure.
-No, thanks.

Come on, don't be like that.

-Let's take one to celebrate my donation.
-Forget it!

-Come on!
-One,

-two,
-Don't you dare.

three.

Did you get it?

I'll send this photo to Detective Geum.

I'll be going now.

I should get going.

-Thank you.
-Sure.

My gosh!

Hey.

What the...

He's a talented photographer.

Oh Joon-seo, that punk.

I totally see why he scurried away.

Delete it now.

Why? It's a humiliating celebrity shot.

I'll pass it down to my grandkids.

Give that to me!

I'm keeping it to have a laugh
whenever I'm down.

Dr. Brain is here!

Hello, Dr. Shin.

Dr. Brain, you're back!

It's good to see you! I missed you.

I knew you'd help. Come and sit down.

Come on inside.

The meeting will be
so much better with you here.

Let's get to it!

I was the one who brought him back, me.

Do they not see me?

Why am I at a police station?

Wait, h*-young.

Where's my little brother?

He keeps asking about his brother
and insisting he's 17 years old.

Shall I first meet this Reset Man?

Where am I?

A police station?

Why am I here?

These people.

Who are they?

Police officers?

Mr. Kim?

Who are you?

Hello.

I'm Shin Ha-ru, a neuroscientist.

And I'm Detective Geum Myeong-sae

with Seobu Police Station's
Neuroscientific Investigation Team.

Why am I at a police station?

My little brother.

Where's h*-young?

Your brother is at home, safe and sound.

We're investigating your mother's m*rder.

My...

My mom?

She's dead?

Why am I here?

My brother.

Where's h*-young?

Your brother is at home, safe and sound.

We're investigating your mother's m*rder.

My mom?

Is my mom dead?

Yes.

Mr. Kim,

we need you to come somewhere with us.

KOREA NATIONAL UNIVERSITY HOSPITAL

There's a significant accumulation
of hemosiderin in the hippocampus.

It's an old build-up of blood,

indicating a hemorrhage
from brain damage long ago.

That must be

what caused his symptoms then.

Based on the symptoms we've seen so far,

he seems to have anterograde amnesia.

It's a rare brain condition
preventing new memories from forming

following an accident.

Time stopped for Mr. Kim
some time when he was 17.

He's been stuck in that time ever since.

His state is a lot like that
of the character in the movie Memento.

Take your time getting up.

A hospital?

Why am I here?

Mr. Kim loses his memory every 30 minutes.

He's stuck at a certain point in time
when he was 17.

Whenever he comes to,

his family members
suddenly look different,

and he finds himself
in unfamiliar situations.

This frightened him,
so he refused to leave his room

and became a homebound recluse.

Let me ask,

did you really have no idea

your brother had a memory issue?

I did think something was odd.

He kept asking me how I'd gotten so tall.

I didn't know it was an illness.

Then why didn't you take him to a doctor?

I told my mom, but she said

there was nothing we could do
because he wouldn't leave the house.

Your brother's last memory

is of you and your mom

scolding him for missing
a swimming lesson.

Do you remember that incident?

He got told off so many times

for missing his swimming lessons.

Is that scar on your hand
from that day, by any case?

This is from a burn

while making instant noodles.

Was your brother ever hit on the head

or pushed into a wall

around that time?

I don't know.

I don't remember.

How was your brother's
relationship with your mom

around the time he was 17?

It wasn't...

that great.

-He was an angsty teenager and...
-She was his stepmother?

Yes.

And how did you get on with your brother?

We got along.

We're half-brothers,

but he's like a real brother to me.

h*-young, I'll ask you one more time.

Were you aware that your brother

had memory problems?

No.

I wasn't.

Liar.

If we put together
Kim h*-young's nonverbal cues,

there is a high probability
that he's lying.

You make it sound so complicated.

Anyone could tell he was lying.

He knew his brother could only remember


yet pretended not to know.

Why?

To frame his brother?

Because his brother
wouldn't remember what he did anyway.

It makes him a perfect person to frame.

Wait, doesn't it say somewhere
they aren't full brothers?

They are half-brothers.

When Kim Joon-young was ten,

his dad married the victim,
whose son h*-young was five at the time.

There's something off
about the suspect caught on camera.

He heads toward the house
with zero hesitation.

He's an anterograde amnesiac
whose memory resets every 30 minutes

and has not left home in five years.

So how can it be?

He does look more like
the younger brother.

He hasn't forgotten all his memories.

He recognizes his little brother.

He'd remember the neighborhood
if not much had changed.

Here's the most important thing.
What is the motive?

The older brother
didn't get along with the stepmother.

But the little brother
had no reason to k*ll his own mother.

According to the neighbors...

The lady who lives there...

My gosh,
she took such good care of her son.

She was always
begging him to eat something.

If I were her,
I would've let him starve to death.

The younger one? He's very sweet.

He always greets the neighbors politely.

-I see.
-My gosh.

She was very enthusiastic
about her children's education.

It's not easy
caring for a competitive swimmer,

but I never once saw her
express her fatigue.

h*-young always
listened to his mother too.

That family's only source of worry

was Joon-young, the older brother.

Joon-young definitely
has a clearer motive than h*-young.

I also think the older one
is a more likely suspect.

When he called the police,
he called the stepmother "that woman."

That shows hostility.

Due to anterograde amnesia,

Kim Joon-young kept reliving
the bad memories of his mother.

How much longer will you keep this up?

I can't take this anymore.

If you're going to keep this up, just die!

I don't need a son
who stays cooped up playing games!

You even skipped your dad's funeral
to play games. Who does that?

Just die!

The day before the incident,
he was harshly scolded.

That may have triggered
his pent-up anger and violent tendencies.

It can happen subconsciously.

I agree with Captain Seol.

Then why did he call the police?
He didn't have to confess.

He wanted to turn himself in
before he lost his memory.

So he knows
there's something wrong with his memory?

I think he has a vague sense of it.

Hold on.

It's odd.

The police received the call

at 6:29.

We suspect that
the incident took place at 5:30,

which means the call was made
about an hour after the incident.

The assailant's memory
is reset every 30 minutes,

so he shouldn't have
any memory of the m*rder.

How did he report it?

We can't be sure that
he forgets everything every 30 minutes.

I tested his memory.

It resets roughly every 30 minutes.

He could retain
particularly memorable memories.

That's true.
Our test wasn't exactly memorable.

Okay, fine.

Let's run another test
to find out whether or not his memory

resets every 30 minutes.

This time, with something very memorable.

Sorry we kept you waiting.

My gosh, it's way past dinnertime.

What do you feel like eating?

Some short rib soup?

Sure, anything's fine.

Okay. Short rib soup, it is.

All right. Here's your food.

Wait.

Allow me to season your soup for you.

Hold on.

That might be too salty.

Gosh, I'm sorry.

I should remove some of that salt for you.

Hold on. Oh, boy.

Gosh, here.

My goodness. It stinks.

I haven't gone home in three days.

It's fermented to perfection.

You see, this has a very special function.

Look at that.

Nice. Soak it all up.

This fermented sock

will soak up all the salt.

Dunk it all the way in.

Oh, my. This is perfect.

What do you think?

Are you satisfied now?

Yes, it's certainly memorable.

My gosh.

There. The salt is all gone now.

Here.

Eat up.

How am I...

supposed to eat this?

Right? I guess it's not that appetizing.

He must be starving right now.

If he still won't eat it after 30 minutes,
it means he remembers.

Then I'll accept
that he is most likely the perpetrator.

Eat up. You must be hungry.

Why did you do it, Joon-young?

What's wrong?

You don't have much of an appetite?

No.

See that?

He remembers.

I'm certain he remembers.
That's why he didn't eat the soup.

It's possible that
he instinctively sensed danger.

Did you not see
the look on Detective Geum's face?

He was so nervous
that he'd actually eat it

and kept flaring his nostrils.

He was practically
sending him signals not to eat it.

Dr. Shin.

Why does it feel like
you're forcing your opinion on me?

What I mean is that we need
more concrete evidence.

The m*rder weapon, for example.

He doesn't remember what he did with it.

Or a witness.

Settle down, both of you.

I brought in someone important.

We found the witness
in the security footage.

Come on in.

My gosh.

Dr. Shin?

Oh, my.

Dr. Shin, I'm a huge fan!

Nice to meet you.

Nice to meet you too, Ms. Witness.

He called me "Ms. Witness"!

I feel like I'm in a movie.

-Are you sure she's that witness?
-Yes.

Can I get a picture with him later?

Of course.

But first, there's something we must do.

Right. Sure.

Yes, that's right.

I remember him walking past me.

Do you remember what he looked like?

I didn't get to see his face.

He was wearing a mask
and had his cap pulled down.

Please tell us everything you remember.

He was wearing a grey hoodie
and he was tall.

And? What else?

Also...

That's all.

All right, Ms. Huge Fan.

This footage shows

that you turned around as he passed you.

Why was that?

I'm not sure.

Something must've caught your eye.
Maybe he was handsome.

Could that be it?

No way. Never.

You're the only one I find handsome.

You have a sharp eye,
so you must have good observation skills.

Let's try to think one more time.

It could be an odd feeling or behavior

or even a smell.

I did turn around for a reason.

I'm sorry. I just can't remember why.

Could I perhaps try that thing?

You will now close your eyes.

Take a deep breath.

You will feel your body relaxing.

Focus on your breathing.

Unbelievable.

I've never had a witness
ask for a hypnotic interview before.

The witness's willingness
helped with building a rapport.

She's successfully entered
the hypnosis state.

She's already in the theta wave state.

It's currently last Saturday, at 5:55 a.m.

On your way to the bus stop,
you notice you forgot your wallet,

so you turn around to head back home.

Now, picture that moment.

You see the suspect
walking toward you from a distance.

The suspect is now approaching you.

The suspect is now walking past you.

When you have
the clearest view of the suspect,

freeze the scene.

Take a photo of that moment

and look at it closely.

Please describe in detail

everything you see and feel.

The moment I take a peek at him,

he becomes aware of me.

He's using his hand to adjust his mask.

I think it's to cover his face.

Keep telling me what you see.

I see a stain.

A colored stain.

Blood.

I think it's blood.

I see blood everywhere.

Also,

the smell.

I've always been sensitive to smell

and can't even walk past a fish shop.

I turned around to look at him
because I smelled something.

All right.

Try to identify the smell.

The smell of blood.

And...

maybe a restroom?

Alcohol?

I can't say for sure.

I don't know what it is,
but it's not pleasant.

It's not a smell I like.

I can't breathe.

I'm scared.

Something feels scary.

Breathe slowly. You're okay.

You are safe.

An unpleasant smell

and something that scares her.

It must be the smell of blood.

I think that means it's Kim Joon-young.

All right. One more.

There we go.

You both look great.

No way! Thank you so much!

I'd like to ask you for a favor.

If you remember
anything at all about the suspect,

please call us.

Of course.

-Have a good day.
-Bye.

Hello, Chief.

Captain Seol said

that the witness didn't
remember anything significant.

Not really.

Forget it, then.

Nothing beats a confession anyway.

Don't drag this out.

Hand Kim Joon-young
over to the prosecution tomorrow.

SEOBU POLICE STATION

Do you feel remorse?

What was your motive?

-Was she a*usive?
-How do you feel right now?

-Why did you k*ll your mother?
-Please say a few words.

What was the motive?

Please say a few words.

Do you feel remorse?

Dr. Brain, what's bothering you so much?

A memory disorder patient
who hadn't left the house in five years

swiftly m*rder*d his victim,

disposed of the evidence, and confessed.

Do you really believe that's plausible?

I'm not sure.

But there isn't any evidence
that proves otherwise.

Gosh, a drink is what you need
at a time like this.

Hey, today's Saturday.

How about a shot of malt whiskey each?

Do that with Captain Seol instead.

That reminds me.

That preposterous
love confession tactic of yours

almost got me k*lled.

She told me how she felt
at the peak of a mountain,

and I fell backward in shock.

I almost fell off a cliff and died.

Off a cliff?

-Why are you in one piece then?
-Thankfully, I fell somewhere flat below.

I was scared out of my wits.

What a bummer.

I could've been rid of you.

Look here, Dr. Brain.

You gave her that advice
to get rid of me, didn't you?

There you go again,
twisting good intentions into evil plans.

You just proved your brain
is riddled with low self-esteem.

You really gave her
that advice for my sake?

Of course not.

It was for Captain Seol's sake.

Captain Seol came to you for advice?

I'm quick to notice things,

so I figured it out.

Although why she likes you
is worth being studied.

She says it's my smell.

Your smell?

The smell of warmth or something.

See, when she was at the hospital,

I took care of her from her bedside.

She says she recalls the smell from then.

What is she, the girl who sees scents?

I don't know whether to believe it or not.

It's possible.

How our brains process smell

is different from
how they process the other senses.

Sight, hearing, touch, and other senses

pass through the thalamus first
before being transmitted to the cerebrum.

Say your hand
comes into contact with hot water.

That information is
relayed to the thalamus,

which then tells your brain

that it's hot, that it hurts,
and that you should take your hand out.

Gosh, it's hot!

But the smell skips that intermediary step

and goes straight to the part of the brain
that handles emotions and memories.

That's why certain smells

elicit related emotions or memories

and make people subconsciously do things.

For example, in the movie Parasite,
whenever Lee Sun-kyun

smells poverty on Song Kang-h*,

he grimaces subconsciously.

And that action
eventually causes the mad k*lling spree...

I've thought of a way to identify...

the real k*ller.

Please do your best.

Okay.

All right.

The suspect is walking past you.

You smell something,

and it makes you turn to look.

That's right.

A smell.

That man

smelled of something.

What smell was it?

I'm not sure.

What smell is this?

What's this smell?

I'm not sure.

Is this the smell?

Yes, it's this smell.

The smell of water?

The smell of bleach?

The smell of a swimming pool.

I smelled a swimming pool.

That's it.

Okay, then.

Think of the appearance
of the suspect who walked past you,

smelling like a swimming pool.

The back of his hand...

There's blood on it.

And...

there's a scar.

The smell of a pool.

The scar on the back of the hand.

The k*ller's the younger brother,

Kim h*-young.

Because memories may disappear,

but emotions remain.

Hey, Kim h*-young!

You're the one who left those traces.

It is indeed a dead body.

Let go!

What is your most intense memory in life?

On the day of the accident...

Could my memory have been distorted?

-Don't come near me!
-Do you really want to die?

I'll grant you that wish.

Dr. Brain!