Mouse (마우스)

How are you here?

Not long ago, Daniel Lee commissioned a murder.

Here's your next target.

Consider this person a top-class predator.

This is the address he gave me.

You sure have a good memory.

You would since you have the genes of a predator and a genius.

So why are you here?

Sung Yo Han and I.

Were we your lab mice?

I should start by thanking you.

Thank you for growing up to be a killer,

Jung Ba Reum.

It's too bad that Sung Yo Han disappointed me.

Only if the bill to abort pregnancies...

with fetuses carrying the psychopath gene was passed...

Actually,

I thought it being dismissed gave me an opportunity.

The assembly would've never agreed to it anyway.

In order for the bill to pass, I knew I needed a long-term plan.

A long-term plan?

That's why you went to Daniel.

I asked for the list of mothers who were pregnant...

with babies carrying the psychopath gene.

Daniel was in shock after finding out...

that Han Seo Joon had killed his sister,

so he was easy to convince.

Is this the right course of action?

I can't be certain either.

However, we can't reach Utopia without going through a war...

or fighting off crimes.

It's ours to build.

Think about Jennifer's death.

Let's make sure that no one dies like she did.

Once we grew up to be psychopathic killers,

you were to use that as evidence to pass the bill.

You did so by forming a black ops unit...

within the National Intelligence Service.

That's right.

We observed the mothers and fetuses during their pregnancies.

To make sure the children were brought to term.

Give birth to your child.

Once both boys were born,

agents were placed to observe their actions.

They'd submit their reports and experts analyzed...

what had been observed.

Is that why you ordered Song Soo Ho...

to kill my mother who tried to kill me...

and the rest of my family?

That was an accident.

It completely crushed Song Soo Ho.

But he had no choice.

Without you, the experiment would've been terminated.

How could you take advantage of a victim's family member?

How is that humane?

We just let him know so we could dream the same world.

A world with no victims, no bereaved family members,

and no crimes.

Why didn't you get involved...

when I started killing other psychopathic killers?

It's true that your actions caught me off guard.

But seeing the public dub you as a hero changed my mind.

When the public, who saw you as a crusader,

find out about you,

they will be seething.

And passing the bill would only get easier.

You took advantage of victims' families...

and killed innocent people.

You're a monster, just like me, Choi Young Shin.

I am essentially a scientist. A geneticist to be exact.

Only science can solve the crimes of this world.

Terminating potential killers before they are born...

so that we can live in Utopia sans murder, battles, and wars...

is my ultimate goal.

In the world I dream of,

a psychopathic killer like you shouldn't exist.

You won't be brought to term.

Go ahead. Kill me.

Dying brutally in your hands...

will get us all a step closer to my dream world.

The more a society evolves, psychopathic genes...

spread across the world like a disease.

One of these days,

those with psychopathic genes will annihilate us normal people.

Before that happens,

the psychopathic gene must be eradicated.

Kill me. Kill me!

What is this place?

Whose house is this?

What on earth?

Is this a summerhouse?

Song Soo Ho!

Detective Lee?

What on earth?

The laptop.

He died because of that laptop.

This is where the scumbag who killed Detective Shin is.

Kill me. Kill me already!

To save my life,

you knelt before Han Seo Joon.

But that surgery...

gave me emotions that someone like me shouldn't feel.

This lab mouse of yours...

can no longer kill.

No.

Kill me. Kill me now.

Hurry up and kill me!

That way, people will get to live in a safe and peaceful world!

Kill me! Hurry up and kill me!

You're...

just as pitiful.

Jung Ba Reum, that jerk.

You have one voice message.

Detective Ko, I'm going to kill the guy who killed my grandma.

I'll also take revenge on behalf of your brother.

Darn it. Bong Yi!

Ms. Kim?

What are you doing here?

Ba Reum! Where's Ba Reum?

Calm down. He did it to keep you safe.

To keep me safe?

You'll soon find out the truth.

Will Oh Bong Yi be taken and found as a corpse?

Or will she be dropped off safely at her destination?

I think they might take her hostage.

Make sure she never leaves this place until I'm done.

Please take care of the rest.

Ba Reum.

You're...

no longer the guy you used to be,

just seeing that you didn't kill Choi Young Shin.

That still doesn't change anything.

Ba Reum! Ba Reum!

Hey, can you trace Bong Yi's cell phone?

A cat...

Ba Reum, that darn punk.

Hello?

That piece of plastic is from the Goat Man mask.

We found Kim Han Kook's DNA on it.

It was Ba Reum.

He's the jerk who killed my brother.

Officer Jung? - Detective Ko Moo Chi!

Detective Ko.

Detective.

How about a drink?

Officer Jung, I heard...

you were always nice to my brother.

I'd like to be the kind of brother that Moo Won once was to me.

Bong Yi.

You despicable jerk.

Was it fun?

Did you enjoy yourself?

You must've found it hilarious toying me around.

Without even the slightest clue,

I ended up falling for the guy who killed my grandma.

Did you have fun?

Grandma, are you watching?

Please give me strength.

Give me courage.

An eye for an eye, a tooth for a tooth.

That favorite quote of yours.

I'll do exactly what you did to my grandma.

I'll kill you.

Go ahead and kill me too.

Kill me like you killed my grandma!

No, Bong Yi. I can't make you become a murderer.

My grandma cared for you so much.

How could you... How could you do that to her?

How...

Bong Yi.

Bong Yi, I'm sorry.

My grandma...

I'm sorry for everything.

I...

I'll turn myself in.

Just let me turn myself in.

Bong Yi, I'm sorry.

Bong... Bong Yi.

You!

Yes, that's right. I killed Kang Duk Soo.

It was because of you.

I killed him because I thought you'd be dangerous.

I'm...

sick.

But I think I might be able to get better.

I saw hope today.

You don't...

even deserve to die like this.

Turn yourself in.

Turn yourself in and live your entire life in misery.

I hope your guilt eats you up.

I hope you live miserably wishing you were rather dead.

That's how I want you to pay for your sins.

Bong Yi...

Bong Yi...

It was you.

You killed my brother.

Detective Ko.

Please...

arrest me.