Original subtitles

(This drama is fictitious and names, places, organizations, incidents,)

(entities, and jobs are unrelated to real life.)

Starting right now, I plan to play one last game.

Why did you suddenly decide to turn yourself in?

If you carefully look at each step,

everything is bound to be connected at some point.

Who angered you to project your rage onto the victims?

This is all worth it. I wanted to see that look on your face.

I wanted to see you flustered and hopeless.

Do you know why I'm doing this?

Because I'm going crazy, thanks to you.

It's hereditary.

He and his mother will become like his grandma.

It's not 7. It's 8.

I killed another woman three days ago.

Find her before the body disappears forever.

Who knows? This time, you might find it first.

Find the bodies. That's our only way.

He kept a piece of jewelry with him.

It means there's a target he wanted from the get-go.

A special someone he wants to kill.

The many people you killed.

Lee Jin Sung and Seo Kyung.

You will pay the price for it.

What nonsense are you on about? I killed whom?

The things he did...

are happening again here.

I'll stop him this time.

Whatever it takes.

(Previously)

Are you okay?

There's... There's a dead body.

I haven't seen you before.

Who are you?

She transferred to my team. She's Inspector Han Seo Kyung.

How do you think Mr. Seo is doing...

these days?

I don't know.

He seems a little different recently.

But then sometimes he's just the same.

(Director of Detective Division, Oh Mi Sook)

After I stopped,

I saw that for some reason the other door was open too.

You crossed over...

the boundary.

So, Do Won,

do you have evidence to back up your story?

(May 12, 2020, John Doe 3)

(May 12, 2020, Lee Seung Ho, Male)

Find the body, whatever it takes.

Only then can we catch him.

I told you, Do Won.

To live in silence.

Ms. Oh.

Why...

At times, you must continue...

even if you know...

it's a wrong path.

(Train)

(Mukyeong Hospital)

(Episode 11)

What happened?

When he was looking for Seok Min Jun's hideout,

there was an accident.

It's nothing.

I'm lucky that it's nothing serious.

What do you mean it's nothing serious? You have a severe burn.

They have to operate on his leg.

Be quiet.

It's a good thing I went in instead of you.

If it had been you, you probably wouldn't have made it out alive.

What on earth happened?

There was a fire.

They are trying to find out the cause now.

Do you think Seok Min Jun was behind it?

When I looked into it,

I found out the warehouse belongs to his father's company.

He was probably trying to destroy the evidence.

So it had to be his doing.

Anyway,

I didn't find Hwang Hee Kyung's body in the warehouse.

Even if there were bloodstains, DNA,

or other pieces of evidence, the fire probably...

Ms. Oh.

How are you feeling?

I'm all right.

Last night around 9pm,

there was a fire at a warehouse...

located in Inkyeong-dong.

From this fire, a police officer who was at the warehouse...

was hurt and is now being treated for the injury.

In order to find out the cause of the fire,

the police and the fire department...

have launched an investigation.

This is quite rewarding.

I wanted to see that look on your face.

That flustered look...

when you're cornered.

Is this how you are going to...

threaten me?

Do you know why I am doing this?

I'm going crazy thanks to you.

I wanted to ask you one last time.

The question I have been asking for 12 years.

What will you choose this time?

So is this your answer to my question?

I'll go back to work as soon as I get discharged.

For the time being, rest up and focus on getting better.

Don't worry about anything else.

Well,

Wasn't Mr. Seo...

at the scene with you yesterday?

No. Only the two of us went to the warehouse.

Actually, I was wondering why he hadn't called.

Let me call him now.

I haven't been able to reach him.

So you guys don't know where Mr. Seo is, right?

We're trying to locate Mr. Seo's vehicle now.

Let's wait and see.

You don't think something happened to him, right?

You go ahead without me.

Okay.

I heard you,

loud and clear.

My answer...

will never change.

I will risk everything I have...

to protect you.

This is awful though.

Even until the last moment,

you gave me the wrong answer.

Did you find it?

Okay. Thanks.

They located Mr. Seo's car.

It was in the parking lot at Ilsung Station.

- "Ilsung Station"? - Yes.

Reporter Park, this is Oh Mi Sook of Mukyeong Police.

I want you to publish an article.

It's about Mukyeong Station and the deterioration of the trains.

(Mukyeong Station)

(Notice: Do not trespass after May 3, 2015...)

(Stationmaster of Mukyeong Station)

Luckily, the bullet grazed your shoulder.

The wound isn't severe, so let's keep observing it for now.

Okay.

You crazy jerk! If you want to die, find a peaceful way to go!

Are you trying to make me faint?

You just vanished without leaving a message. Where have you been?

And how did you get hurt?

Where's Ms. Oh?

What?

Ms. Oh.

Where is she?

(Mukyeong Police Station)

("The Police Find Seventh Victim at Mukyeong Station Again")

(Mukyeong Daily)

(Personal Details)

Darn it. This is driving me crazy.

(Personal Details, Name: Hwang Hee Kyung, deceased)

My gosh.

Sir, it's Mr. Seo. Mr. Seo is here.

What?

(Mukyeong Police Station)

Mr. Seo.

(Director of Detective Division)

Who are you?

What's going on?

I'm sorry, sir.

He's our team leader and he just returned to work.

I apologize, sir.

(Serious Crime Team 3)

She quit? When?

Not too long ago.

She resigned due to health problems, but we don't know anything specific.

But she was worried about you until the day she left.

What in the world happened?

Do you know how worried we were?

Jin Woo never took a day off.

He searched all over the place for you with Inspector Lee.

Where have you been?

Mr. Seo.

I need to check something.

I need to meet Ms. Oh.

Mr. Seo.

Ms. Oh.

Ms. Oh!

(Samwon Gas, Overdue Bill, Oh Mi Sook)

Did you lie to me for 12 years,

Ms. Oh?

(Mukyeong Station)

(Mukyeong Station)

What's going on?

(Mukyeong Police Station)

I only found his car at the train station.

He's not home either.

I wonder where he went.

Didn't it...

rain last night?

On rainy nights,

at 9:35pm,

Train 8210 arrives at Mukyeong Station.

Why are you suddenly asking about the weather?

(Weather)

(Today's hourly weather forecast)

Spring is over already, but it's raining every day.

Inspector Han. Are you going somewhere?

(Ilsung Station)

Seo Kyung.

Do you...

not know me?

What are you doing?

Think that I'm crazy, that I'm out of my mind.

That I'm mad.

It's not over yet.

As long as she's alive in whatever form,

that will be enough for me.

I'm sorry.

I'm sorry I wasn't here.

I'm sorry I left you all alone.

I'm sorry.

I didn't mind leaving my world behind.

Seeing her alive...

Even if she doesn't remember me,

even if she doesn't know me,

I wanted to live like that in this world,

next to her.

Mr. Seo, you're okay, right?

You're coming back, right?

This stop is Mukyeong Station,

the final destination of this train.

Where is Train 8210?

("Train Operating Past Its Lifespan, Is It Due to Safety Ignorance?)

We need to be careful these days because the government...

is carrying out inspections.

And on top of that, this article got published today.

So you're just going to scrap it?

We were planning to do it anyway.

We've been delaying it, but it's been decided today.

We're going to scrap it tomorrow.

(Lee Jung Min)

Inspector Lee, it's me, Han Seo Kyung.

Something happened to Mr. Seo.

Do Won disappeared?

If they scrap the train, he might never be able to come back.

We need to find a way.

(Mukyeong Police Station)

Are you really not going to tell me...

what happened?

It was a 38 revolver, right?

The gun that killed Seo Kyung.

I found out...

who killed Seo Kyung.

But there's nothing I can do.

This time, I really need to stop her.

But there's no way for me to go back.

What is it...

that you're going through?

It's what you asked for.

(Deleted from Family Registry)

(Min Jun, Son of Oh Mi Sook)

Did you know that Ms. Oh had a son?

I checked...

where Ms. Oh went.

Ms. Oh.

Ms. Oh!

Do Won...

It wasn't...

for me, was it?

What you wanted to protect...

12 years ago.

It wasn't me, was it?

You wanted to protect...

your son, the real murderer.

Answer me.

When did all this begin?

I wonder where...

everything went wrong.

When I got pregnant with the child of a married man,

and when I decided to have him and raise him on my own.

Whatever choice I had to make,

I did not hesitate.

I didn't know...

what my life...

had prepared for me.

Only around the time my mother died...

did I realize that...

my mother who was sick for years...

had a rare genetic disorder.

And that illness...

was passed to me...

and to my child.

That's when I found out.

You lose your memory,

your personality,

and then you die.

My son...

thinks that I abandoned him.

But I...

didn't have the courage to look after a child...

who could show symptoms at any day.

You're a good boy, Min Jun.

Yes, you are.

I'll call you, okay?

Mom, don't go.

Mom!

Mom! Don't go!

Mom!

Don't go!

Ms. Oh.

We got the fingerprint results.

Did you?

It's the boiler repairman who was here earlier in the day.

Should we interview him as a witness?

Do you have the autopsy results?

Cause of death was asphyxiation.

He was strangled to death,

then hit on the head.

Overkill.

- What's the murder weapon? - A necklace.

A necklace?

It was in the jewelry box that was emptied.

He was strangled with this.

The killer took it.

(Tetrabenazine tablets)

Yes.

It's me.

I killed him.

This pill bottle.

You left it on purpose.

To make me come to you.

Why?

"Why did you do such a thing?"

Shouldn't you ask me that first?

If you're really my mother.

What are you...

planning to do now?

What are you afraid of?

The fact that your son killed a man?

Or...

the fact that you're investigating...

a murder your son committed?

The choice is yours.

Will you continue to live as a cop?

Or will you live as my mother even if it's for a moment?

The culprit of the murder...

is my father.

I'll go to the station and explain everything.

I'll say that my father is the culprit.

And I have the evidence too.

No, Do Won.

Do you want to live the rest of your life as a killer's son?

Even so, I can't hide the truth.

I can't do that.

And how will that change anything?

Your father is already dead, Do Won.

He can't even be punished for what he did.

Then, what do I do now?

What should I do now?

You stopped me because your son's fingerprints...

might have been on the necklace, right?

Until when were you going to deceive me?

Until I die...

after living my whole life in pure torment?

When I realized what I had done,

it was already too late.

I dream about that guy I hit with my car every night.

Does it really not bother you?

- I'll turn myself in. - Stop the car.

I'll go to the police station now and turn myself in.

I'll tell them what you did.

Goodness. You're so pathetic.

Do you think things would have been different...

if your son hadn't been in an accident?

No.

You would have never been able to stop yourself.

Even now, you are walking into the endless abyss...

because of your son.

Ms. Oh, you don't deserve to die.

Bear the pain...

in the abyss you voluntarily walked into.

Do...

Do Won...

The culprit of the Mukyeong Residential Murder 12 years ago...

- is in that house. - What?

Find the jewelry that disappeared from the scene 12 years ago.

Ms. Oh will know where that is.

Where are you going now?

I must go back. Inspector Han is in danger.

Hey, who's Inspector Han?

Let's go.

(Mukyeong Station)

I'm sorry.

I'm sorry I wasn't here.

I'm sorry I left you all alone.

I'm sorry.

In your world,

did you meet me?

I was just curious.

Just like you said,

did anyone look out for me?

You'd better remember this.

Just wait.

You'll see it again on the finger of someone...

very close to you.

(Inspector Han Seo Kyung)

You're outside of the cellular network coverage area.

(Mr. Seo Do Won)

The person you have reached is not available.

You will be connected to voicemail.

Mr. Seo.

Seo Kyung.

Hello.

I thought we would never meet again here.

Let me tell you in advance.

I came prepared.

But I won't have to use this...

because your last target isn't...

me.

It's your mother.

Your last target is your mother who abandoned you.

"When will this illness destroy me?"

"When will I lose my memory..."

"and the ability to control my own body?"

"Today? Tomorrow?"

When your mother abandoned you...

and left you feeling scared,

you probably asked yourself this.

"Was I abandoned because of my illness?"

"Did my mom abandon me..."

"because she was scared I might become like my grandmother?"

You're a good boy, Min Jun.

Yes, you are.

I'll call you, okay?

Mom, don't go.

Mom!

Shut your mouth.

You saw your mother in the patients you killed.

Those who came to you feeling miserable...

after having abandoned their children or family.

I don't deserve to be a mother.

The person you were actually killing...

The person you really wanted to kill was actually your mother.

The person who gave birth to you.

This time, things won't go your way...

because I'm going to stop you.

You still don't know...

who my mother is.

That leaves us with the very last game.

The person who gave me this illness.

The person who never fails to repay me.

Do you think you'll find her first?

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

(Mukyeong Psychiatric Clinic)

Let me know as soon as Seok Min Jun goes anywhere.

Make sure not to lose him.

Yes, ma'am.

But didn't his family register get lost in the fire?

Do you think we'll be able to find his birth mother?

We'll have to find it somehow.

Jae Hyuk got injured, and Mr. Seo disappeared.

Detective Kang.

Someone left their world because of me.

I need to stop Seok Min Jun...

for the sake of that person.

I must stop him at all costs.

No! Someone, help me!

How does it feel to die?

No. Don't do it.

- That's how I felt all my life. - Stop it.

Please spare me. Spare me!

I saw my end.

(Voice Memo)

(Voice Memo)

(Seok Min Jun)

What are you trying to do?

I was thinking about who I should...

send this voice memo to.

Who should I send it to?

Han Seo Kyung?

It looks like she's going to find out...

who you are soon.

If you want to stop me,

come meet me at that house right now.

Gosh, where did he go?

Sir.

It was murder, not suicide.

This person was shot.

There's no license plate.

It's going to be hard to identify this person.

My gosh, this is going to be a headache.

What's that?

It's a police shoulder patch.

(Ms. Lee Jung Min)

Ms. Lee.

I'm at the site.

We found a skeleton by the river.

I think this person on the force. Probably a superintendent.

What? You want me to come where?

(Mukyeong Police Station)

I'm looking for the person who leased out...

your father's house in 1993.

May I check the lease agreement?

I'll come to you right now.

If there aren't any documents left,

he could at least tell me anything he remembers.

He passed away?

I see.

May I help you?

Where's Mr. Seo Do Won?

Oh, I see.

I only recently heard about his dad, so I couldn't go to the funeral.

Do you not know when he'll be back?

He'll be back soon.

Once he comes back, I'll tell him you came by.

Okay. Oh, right.

He asked me for this. Can you please give this to him?

(National Forensic Service)

It's a list of patients who have Huntington's disease.

Min Jun!

Please don't die!

I...

I will risk everything...

to protect you...

every single time.

(List of Patients with Huntington's Disease)

A woman in her 50s or 60s.

(Oh Mi Sook)

(List of Patients with Huntington's Disease)

(Oh Mi Sook)

By the way, that wasn't his family name.

- Pardon? - He didn't have...

a unique family name like that.

Oh Min Jun. I think that was his name.

(Police Officer Personnel Information)

(Oh Mi Sook)

(Birthday: August 15, 1964)

Ms. Oh?

(Detective Kang Joon Young)

The person you have reached is not available.

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.

Do you think you'll find her first?

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

(Current time 9:25pm)

Right then, I was saying a foolish prayer.

That I must do whatever it takes to go back.

That this time, I must protect you.

(Mukyeong Station)

I should have realized it sooner.

The overlapping worlds, the repeating fates.

The one sending you to your death once again...

was me.

(Train)

I feel like the same things keep happening.

That scares me so much.

I'm afraid I'll lose everything again.

I do not believe it can be "unplanned".

If you carefully look at each step,

everything is bound to be connected at some point.

Connected at some point.

A train. Another world.

You will forever regret that you crossed...

the boundary.