Train (Teurein / 트레인)

Mom, come here.

Do you think you'll find her first?

Or do you think I'll kill her before you find her?

The two cars you mentioned. They both passed through Innam IC.

The suspect used to live nearby.

That's where they're headed.

This is an emergency. Ms. Oh is in danger.

Call Innam Police for backup.

Okay, I will.

Have you located Detective Kang?

What did you do with the file?

Someone, help me! Save me.

Spare me!

How does it feel to die?

I saw my end.

I will take my time...

to think about what I will do with it.

Let me eat first.

Min Jun.

Eat, please.

Why did you give birth to me?

Because I'm your mother.

Why did you abandon me?

Because I'm your mother.

Then,

why won't you stop me?

You have never been...

my mother, even for a moment.

Do you remember...

the questions I asked you before?

Will you live as a cop?

Or will you live as my mom?

Did you really not know...

the answer I wanted from you?

I waited and waited...

for you to put your handcuffs on me.

If you're my mom...

If you truly considered me your son,

you should have stopped me.

Until when will you let me turn into a monster?

I...

must...

protect you.

You haven't been protecting me.

You have been protecting...

your life and yourself!

Ms. Oh.

Will you not stop me even now?

I'm beating up...

your subordinate!

Stop it!

Ms. Oh.

The only thing you gave me...

was...

this disease.

Ms. Oh!

Ms. Oh, are you all right?

Detective Kang.

Ms. Oh.

Drop your gun.

Ms. Oh, why are you doing this?

At times,

you must continue to the end...

even if you know it's a wrong path.

Don't tell me the person who killed Lee Jin Sung was...

Your son...

will kill you.

You just saw that.

Why are you...

going this far to protect me?

You were right.

I could not...

lose you again.

That's why...

I didn't stop you even to the end.

You should live.

Do whatever it takes to live.

I turned you into a monster.

So I will end my life.

Ms. Oh. - I'm going to protect my son...

as long as I'm alive.

I will risk everything I have.

Me too.

I will risk everything I have to protect her.

As long as I'm alive.

If you hurt her even the slightest bit,

your son will die.

Inspector Han, are you okay?

I thought I'd never get to see you again.

It's all over now.

It's finally over.

No.

Not my son.

I did all of it.

No.

No.

I finally understand...

who my last target...

should've been.

I finally understand...

who my last target...

should've been.

The one person...

The one person...

who could make you become miserable.

No.

No!

No!

I won't be able to hold you responsible...

for Seo Kyung's death.

But the stuff you did here...

is enough to have you rot in jail until the day you die.

This is also enough...

to prove that your son is guilty.

He may be dead,

but the truth doesn't change.

You will also...

end up regretting this.

You will spew blood, hunched over in pain,

and hope for your life to end.

You will forever regret that you crossed...

the boundary.

It's finally over.

The night that started all this 12 years ago.

It was a long and tough night...

for both of us.

If you didn't come to this world,

no one would've ever found out the truth.

You changed everything, Mr. Seo.

What do you plan to do now?

You can't go back anymore.

I'm going to live by that person's side.

Wherever that may be,

the only world that matters to me is the world where that person exists.

Are you really okay with it?

I don't remember what you remember.

And we lived in two different worlds.

I'm okay with it.

Thank you...

for coming to meet me.

Thank you for what you did at the station that day.

For saving me.

I'm so relieved...

to have met you.

I was happy to have met you.

You made me happy.

What about you?

Let's talk again next time.

And when we do,

I hope you'll tell me the truth.

From where?

From where should we start over?

Both in my world...

and in this one,

there hasn't been a single moment...

that I haven't loved you.

From where should we start over?

My name is Seo Do Won.

It's the voice analysis results...

of the voice memos we found on Seok Min Jun's burner phone.

The recorded voice was confirmed to be Seok Min Jun himself.

We also detected the victims' DNA from the necklace he had.

He didn't deserve to die like that.

But he's probably burning in the fiery pit by now.

Why do you think Ms. Oh did something so horrible?

Even if she's his mother,

how could she do such a thing just to cover for her son?

Just the first time. It went wrong at the start.

After that, she couldn't get out of the mess.

What's this?

A skeleton was found by the river.

A car was in the water.

That was found in the car.

Is the victim or suspect an officer?

We found a bullet,

so the local police seem to be focusing on that scenario.

If any officer of that level went missing,

wouldn't we have heard?

For now, they're trying to identify the victim.

Inspector Han told me.

That I was able to return thanks to you.

I didn't do it for you.

I did it for me.

If I'm able to see you again, that's good enough for me.

Thank you.

For being a friend many times.

Cooperate with Ilsung Police?

On what case?

It's a simple robbery.

It shouldn't take too long.

Did you eat something? Where are you?

I'm almost home.

I'll come downstairs when you get back.

Okay.

Hey. The skeleton found by the river.

Compare the DNA to Ms. Oh's.