(All characters, organizations, places, entities, and events...)
(in this drama are fictional.)
Ms. Choi Kyung Hee.
We know you're inside.
If you don't open up, we'll force the door open.
Ryung.
Ms. Choi Kyung Hee.
Ryung.
Newbie, step back.
(Episode 15)
Chief.
Ryung.
Do you think she got the same ones because she couldn't forget Sae Rom?
Then they'd be children's shoes.
Darn it.
She fled.
- Search the place. - Yes, sir.
It looks like she got far away already.
But...
It's strange, isn't it?
Kim Yi Joon was her only child.
That's right.
Whose room is this?
The guy the police pegged as the Subway Ghost...
was the Subway Ghost's victim.
How does the media look?
They have reporters camping out at Metro,
so word already spread that we went to the mental hospital.
They're calling dozens of times a day,
asking what happened there.
It's so hard avoiding answer their question...
If that gets out, the police will fall apart.
That's what he's after.
We'll tell them the truth after we catch him.
So you must stop it from getting out until then. Okay?
Yes, ma'am. Understood.
We'll chase Choi Kyung Hee...
once we get the lab results of the items from her house.
First, let's focus on Kim Yi Joon.
He met with Kim Chul Jin,
his target, at the mental hospital.
I'm sure he killed him right there.
He killed Kim Chul Jin at the place the police gathered...
to catch Kim Chul Jin.
It's the best way to humiliate the police.
He'll display the body after murdering him.
Do you think he'll put it under the subway bench again?
No way.
It's obvious the police would focus on the subway.
And we know what he looks like.
No. He'll display it in the subway again.
That way, his message will be complete.
On face value, it's the subway that killed Sae Rom.
But when you look inside, people were involved.
The people who caused her death, and those who didn't stop it.
He put their bodies on the subway and made it race along...
to say this to the world.
"It wasn't the subway that killed my child."
"It was these people."
He'll show up on the first train tomorrow morning.
There's no way he can load the body...
onto a train where people are already on it.
An empty first train.
That's his only opportunity.
People start boarding as soon as the first train stops...
at the first stop.
We checked...
every surveillance video of passengers on the first train,
and he never appeared on the platform.
There was no one suspicious holding a suitcase...
big enough to fit a body in it.
There was no way to move the body onto the first train.
We'll find out how he did it this time.
Since he'll come back to dump the body.
All right, then. Let's head to Wangsoori Station.
Stop right there!
Darn it.
Hey. Stop...
Shall I start working out again?
They were the punks Metro failed to catch.
My gosh.
- Dad. - What?
Chief Ko didn't call, right?
He's probably busy.
I guess.
Shall we call him and ask if he needs any help?
- Shall we? - Yes.
- Chief. - Chief.
Now?
Yes, sir. I'll be there right away.
I'll go with you.
Chief! Newbie!
Did you have dinner?
Do you know how late it is?
Well, is the investigation going well?
Let's hurry.
Line Two heading to Sindang and Hanyang University.
Line Five headed towards Haengdang and Majang Station.
As for Gyeongui–Jungang and Bundang lines...
- We will... - Us.
Metro Team Two will provide support.
We need to blend in with the passengers naturally.
- The basic rule of a stakeout is... - Disguise.
Those belong to Chief Inspector Gong of Team Two, so keep them clean.
There's no need for this.
No?
- Well, then... - Hold on.
- Hold it. - Okay.
You can wear this and sell hotteok. "Buy some hotteok!"
- A hiker. - Here.
Take this.
Well then,
I'll take this.
Let's see.
I'll take this one.
We will...
know once we catch him.
If Jin is alive.
(Wangsoori Station)
(This is not a boarding location.)
There's no one with a suitcase.
The train to Sinorim is now approaching.
Yes, Ma Ri. How's it going?
No? We didn't find anyone either.
Okay.
They didn't find anyone suspicious either.
It's impossible if it isn't the first train.
Let's get on. You can search from here. I'll go to the front.
- Anyone suspicious? - No.
- Let's keep searching. - Okay.
(Car 7)
Seven?
What's wrong?
That boarding location sticker we saw.
It's used when six-car trains approach.
Since there aren't many passengers in the morning,
I thought six-car trains would be running.
But this is a 10-car train.
He put up stickers intentionally...
so people won't get on the remaining four cars.
Let's go.
(Car 7)
(Car 8)
(Car 9)
There he is.
Open the door!
Open it!
Move.
My sister.
Where is my sister?
Tell me! What did you do with my sister?
My sister.
Is she alive or dead?
Just tell me that.
Do you think she's dead or alive?
That's what I want to know too.
You punk.
No!
Newbie.
- Newbie. - Let go!
I said let go of me!
- Newbie! - Let go of me!
Let go!
Newbie, look at me.
Look at me.
When he looked you in the eye,
I felt my blood boil.
When I lost him, I thought I'd lose my mind.
But the only reason I can hang on now...
is because I've found hope.
He doesn't know either.
We sent a team to the vent that goes from the tunnel...
to the surface.
I made sure the train can go to the rail yard.
He ran into the tunnel? The tunnel?
Are you okay, Ryung?
I'm fine.
He disappeared between the platform and the turnstile.
I think I understand how now.
The night before the murders,
after the Subway Ghost prepared for the murder,
he entered the station and awaited his target...
in a restricted area.
(Restricted Area)
After he murdered his target, he waited for nighttime again.
He went back into the tunnel,
and went to Wangsoori Station through which all four lines passed,
stuck a notice not to board...
on the door of the car where the body would be displayed.
He waited in the tunnel for the first train...
and opened the door from the tunnel to place the body inside.
He probably released the emergency door look the night before.
He stayed up two nights straight and walked in the tunnel for hours.
We're learning more and more about him, so we'll catch him soon.
(NFS)
Hello? Do you have the lab results?
Yes.
Chief.
Please send this to NFS and have it compared...
to my DNA.
Your DNA?
Are you saying the person here...
Just in case...
Please, sir.
Yes.
Okay.
The hairbrush we obtained at Choi Kyung Hee's house...
The DNA from it...
and your DNA matched.
- What? - Choi Kyung Hee...
had Jin.
She's alive.
Then he tried to murder her and failed.
He didn't know where she was after that.
That's why...
he was curious whether she was alive or dead.
That's why...
Jin has a burn scar on the back of her neck.
He realized I wasn't her, and backed off.
She's alive.
Jin is alive.
Jin is alive?
We got the DNA test results.
The woman living in Choi Kyung Hee's house...
was Jin.
I'm so glad.
We'll look for Choi Kyung Hee.
We'll take Kim Yi Joon.
We'll check every surveillance video of passengers...
at stations within a 10km radius of Wangsoori.
We didn't find anything in the vent...
leading from the tunnel to the surface.
If that's not it, I'm sure he exited through the platform.
We'll track Choi Kyung Hee's credit card usage...
and locate her cell phone to figure out where she is.
Okay.
Make sure...
to find Jin.
We'll make sure to catch Kim Yi Joon.
Yes, ma'am.
I'm sure it rolled in here somewhere.
- Did you find it? - No.
- Did you find it? - How did I lose something this big?
Don't you know the details of an investigation are confidential?
I thought maybe I could help.
It's not like I can trust you.
I'll be blunt.
I asked you to guard the hospital exit.
But you lost Kim Yi Joon because you ran after the Grasshoppers.
Well...
You're Subway Police, so you saw them as the Grasshoppers.
But to me,
they would've looked like rats trying to get Kim Yi Joon out.
We need to check the surveillance videos here,
so go to the platform and gather the videos.
Yes, ma'am.
Hello, this is Chief Inspector Ko Ji Seok of the Subway Police.
Thank you for your cooperation.
You worked with Choi Kyung Hee recently...
- at a hospital, right? - Yes.
Did you hear her say she was going to meet someone...
or heard about any of her friends or family?
(Wangsoori Station)
Choi Kyung Hee turned off her phone and isn't using her credit cards.
We can't find her with these.
Then we'll have to take the analog route.
- Pardon? - I found...
every one of her distant relatives,
and there aren't many. I'm sure we'll find something.
Okay.
Okay. How should we plan our route?
You can go here.
What?
It's near your mother's hospital.
It may take a few days. You should go see her.
I will.
We won't get anywhere like this.
People keep pouring out,
but all we see are the top of their heads.
These cameras are there for looks,
not for people to watch.
What are you doing?
Not there. Not there.
Not there.
- Wait. Right there. - No.
What?
His build is different. The security cameras here...
normally make people look bigger than usual.
And look at his hair sticking out from his hat.
The length is different.
You can actually see that?
When you're watching the tape this fast?
Detective Lee, please help us.
What if I ruin your investigation?
That's...
I'm sorry.
Well, you know,
- it's partially our fault too. - Right.
Right?
Sit down.
Okay.
My Ae Shim. I'm here.
Hey...
Ae Shim, are you asleep?
Mom, I won't be able to come for a few days.
I need to find the woman who used to be your caretaker.
I need to catch her...
for Newbie to smile again.
That's why I'm going to catch her.
Newbie...
is very precious to me.
And I want to protect her...
as much as you.
Gosh.
Myung Chul, was that you?
It's been a long time since I lost touch with her.
Well, if you get in touch with her, can you please call me?
Okay.
(List of Addresses for Questioning)
Chief.
The houses I visited...
said they haven't kept in touch with Choi Kyung Hee for 20 years.
How is your mother?
I visited her, thanks to you.
Grandma will protect you no matter what, so don't worry.
Something like that will never happen again.
Ryung!
Ryung. Ryung!
Ryung! Ryung!
(Searching for Missing Person)
What are you drawing?
Oh, it's nothing.
What is it?
Let me see.
Wait, is this...
a drawing that has my name and hearts next to it?
Goodness.
(Our home, Real Estate Agency, Chicken shop)
Youngshin Station exit two,
pharmacy, alteration shop, chicken shop...
What is this?
A map that leads to our home.
A map that leads to your home?
No matter where you ride the subway,
it can take you to the station near my home.
So in case my sister got lost,
I told her to get off Youngshin Station.
After coming out of this exit,
(Pharmacy, Alteration shop)
and passing the pharmacy and alteration shop,
there will be a chicken shop after the restaurant.
(Restaurant, Chicken shop)
And if she takes a right here, it leads home.
It's a map that leads to our home.
I made her draw this every night before going to sleep.
I was worried in case she forgot.
If she drew it every day, she probably still remembers.
But why didn't she come back?
Jin will be all right.
I'm not sure if this will reassure you,
but you saw that house too.
There were no traces of her being locked inside.
She might've been protecting her in case her son tried to kill her.
Protect the person who killed her granddaughter?
For two years?
If Jin was really alive,
I thought there would be nothing else to wish for.
But now that I think she is actually alive,
I keep wondering how she lived,
and if something bad happened.
There is...
something Woo Hyuk told me.
They were often seen...
grocery shopping at a nearby traditional market.
Everyone just thought she was her granddaughter.
I think...
Jin has been doing well.
Now, all we have to do is find her.
She remembers me...
letting go of her hand.
What if we find her,
and she doesn't forgive me?
Say it was a misunderstanding.
From the moment you let go of her hand,
tell her you've been searching for her.
That's what you have to say.
Would she believe me?
I'll be your witness if she doesn't.
"Your sister bugged me to no end,"
"trying to find you."
"She tied me up on the subway and ran..."
"when we first met so that she could join the Subway Police."
"At nights,"
"she didn't sleep..."
"and went into the subway tunnel."
"How could she go there?"
"There's more."
"She was cursed out at Metro,"
"but she put up with it so she could find you."
"Eventually, she dragged me into Metro as well..."
"and is making me suffer."
It would take all night.
You're right.
You're the best witness.
Let's see.
There are two places left.
Let's go to Choi Kyung Hee's aunt's place.
Son.
See if there's pus oozing out of my eyes.
Seriously.
If we catch the Subway Ghost,
you should get a special promotion too.
A special promotion...
would pay for my eldest's piano school.
Let's go. Special promotion!
(We race today for tomorrow)
Found you, Yi Joon.
Auntie.
My gosh. Kyung Hee.
How long has it been? 10 years? 20 years?
I'm sorry for not visiting.
Please let me and her stay for a few days.
Stay as long as you want.
- Come in. - Okay.
- Come in. - Let's go in.
(Youngshin Station, Pharmacy, Alteration shop)
(Real Estate Agency, Our home)
(Youngshin Station, Pharmacy)
(Our home)
Ryung.
(Our home)
Ryung.
How's Yi Joon doing?
He's good.
- Auntie. - Yes?
I have a favor to ask.
If Yi Joon calls by any chance...
The phone is ringing. Hold on.
Hey. I haven't heard from you in so long.
Your mom's here.
Auntie.
Do you want to talk to her?
87-9.
We're almost there.
Did I hurt your feelings?
You said you'd stay a few days.
If Yi Joon comes, tell him I came alone.
Just do that for me.
If you're not in a rush, eat before you go.
Did you hear me?
You have to tell him that I came alone.
You can't tell Yi Joon that you saw her, okay?
Taxi!
- Please get out of here. - Okay.
Ryung.
Just a minute, sir.
Go to your sister now.
Hey.
Little girl.
It's okay.
My baby.
You're okay, baby. It's okay.
It's okay.
I'm sorry.
I'm so sorry.
Grandma will stay with you,
my dear Sae Rom.
Whatever happens,
I'll protect you.
Jin.
I'm sorry...
I kept calling you Sae Rom.
Go on now.
I'm fine. Go on. Go.
Go.
Who is it?
Are you in?
Would you please let us in?
Should I just keep going straight?
Well...
So...
Please take us to Chungrim Mental Health Hospital.
Yes, ma'am.
(Restricted Area)
Please.
Come to Sunil Motel.
No.
Auntie!
Turn yourself in.
I... I saw everything.
I told you to keep quiet. Pretend you didn't see anything.
But... The detective...
will catch you and that man.
Auntie.
I have someone I must protect.
You may not understand things like that.
Someone you must protect.
Newbie...
is very precious to me.
And I want to protect her as much as you.
That detective out to catch me,
the guy you call "Sweetie,"
is your son.
Recognize him already.
Stop breaking your child's heart.
Excuse me.
How old are you?
My sweet Ae Shim. Sorry I'm late.
- Mom. - Get out!
Mom!
It's me, Mom. It's me.
It's me, Ji Seok.
Mom.
Ji Seok.
I'm so sorry.
I need to find the woman who used to be your caretaker.
No.
I have someone I need to protect too.
My son said...
he wants to catch you so he can protect someone.
Let go.
You know my son, right?
The poor thing.
He gave up everything he had because of me.
His dreams, his future, everything.
I can't take her away from him too.
The person my son cherishes...
I must protect her.
If I don't go now,
my son will kill the girl named Yoo Jin.
Then my son...
My son will kill himself too.
Then I...
I'd lose two children. So, please...
Please let go.
Please let me go!
Ms. Han.
Mom.
What happened?
She has a concussion.
We called the police.
She had a scuffle with her caretaker.
The caretaker was running away,
and Ms. Han held onto her and fought with her...
when the caretaker pushed her away.
The caretaker...
She was here?
Yes. I think so. Okay, then.
But...
why did Mom and that woman...
Ji Seok.
Mom.
Do you recognize me?
Yes.
I'm sorry...
for not recognizing you for so long.
No, no.
It's Sunil Motel.
Auntie Kyung Hee said she was going there.
What?
Sunil Motel.
I'm sorry...
this is all I can do for you.
Mom.
Why did you stop her?
Why did you do it? Why? Why did you stop her?
My son said...
he wanted to protect her.
Mom.
Here.
Ji Seok.
When you were first born,
your chest...
was this big.
When I leaned...
against that tiny chest,
it made me feel so secure...
and comforted.
Now, it's...
Well, it goes without saying.
To me,
your chest...
is the broadest in the world, and it makes me...
feel secure.
So...
don't try so hard because of me.
My son doesn't need to do that.
Police. Did two women check into a room?
I just started my shift, so I'm not sure.
Let's split up and check.
Police.
Police. Your cooperation is requested.
If you don't open up, I'll have to force my way in.
Jin.
Don't come closer.
I'm not here for you.
I came to find my sister.
Jin.
Where's Jin?
If you want to find your sister,
catch my son first.
When Yi Joon goes to meet Sae Rom,
the last person he wants to take with him is Jin.
So tell me right now before he finds her!
He knows that I'm running with Jin.
Obviously, he knows...
that I'll give her to you if I'm cornered.
It's more dangerous for her if she's with you.
You know...
how frightening Yi Joon is,
and what he's capable of.
Stop talking as if you care about Jin.
What you did was kidnapping.
For the past two years, my life has been pure torment.
I'm sure it was...
the same for Jin.
I'm sorry.
But...
if even Jin dies now,
I'll have no reason to live.
You were good...
to Jin, right?
She ate well, slept well,
and was well, right?
But...
I can't do that anymore.
If I tell you where she is,
can you make sure...
Yi Joon never finds her?
Where is she?
Jin is...
I don't know where she is.
Mom.
Why did you stop talking?
(Catch the Ghost)
Jin!
Should I tell you how your sister looked when I last saw her?
I'm so sorry, Jin.
I know your sister abandoned you.
But she has been waiting for you without resting for a single minute.
If you don't kill me now, your sister will die.
Because as long as I'm breathing, I will find her and kill her.
This is my final warning. Drop the knife!
Jin.
New drama, "Black Dog".