Original subtitles

Partners for Justice

Seal her hands and feet,

and transfer her to the NFS.

Wait, excuse me.

I don't think you should untie the knot carelessly.

Sorry?

- Who are you? - He's...

Prosecutor Doh Ji-an. He just transferred to the Eastern District.

Prosecutor Doh, I took the photos.

If we don't untie them, it's hard for us to transfer the body.

- Won't that destroy the evidence? - Then why don't you move the body?

Just as it is. All the way to the bottom of the mountain.

Gosh, you're really bad-tempered.

I got it. Sure, let's untie the knots.

But film the process of untying the knots, and keep it for evidence.

Okay?

- Record the video. - Yes, sir.

What is it? Did you find something?

- She doesn't have any fingerprints. - What?

This is Prosecutor Doh Ji-an from Seoul Eastern District speaking.

I guess you do know you were transferred to the eastern district.

- Who is this? - It's Chief Prosecutor Noh Han-sin.

Aren't you coming in today?

My gosh, hello, sir.

A body was found on a hill. I went to the crime scene first.

- I'll go after the autopsy. - Deputy Chief Prosecutor Doh.

It's your first day. Shouldn't you visit the Prosecutor General first?

The field is the most important place for prosecutors to visit.

I'll visit him later when I have time. He'll understand, right?

- Bye. - What do you mean he'll understand?

What? He already hung up on me?

All right. Let's see.

What's up with his nose?

All right. She's a Jane Doe.

A hiker discovered the body and called it in this morning.

As you can see, we found her stuff, but not her ID.

Her fingerprints are all destroyed, so we're running her DNA.

Current time, 10:51 a.m.

I'll begin the autopsy.

- Anemic condition. - "Anemic condition."

Teeth marks on the left side of her neck.

"Teeth marks on the left side of her neck."

- Let's copy the marks. - Yes, sir.

Stab wound on the left side of the collarbone.

"Stab wound on the left side of the collarbone."

- The depth is 15.7 cm. - "The depth is 15.7 cm."

- The length is 3.4 cm. - "The length is 3.4 cm."

- The width is 0.7 cm. - "The width is 0.7 cm."

This is odd.

- The wound shape looks strange. - Make sure you take photos.

Both arms have ligature marks.

Bleeding during the incident.

The fingertips were carved out. The fingerprints are destroyed.

"The fingertips were carved out. The fingerprints are destroyed."

Do you think the killer did that to conceal her identity?

Yes, if not, the killer wouldn't have gone this far.

She was skinned in various parts of her body. Abrasions.

"She was skinned in various parts of her body. Abrasions."

Vulva has been torn and bled.

Traces of sexual assault.

"Vulva has been torn and bled. Traces of sexual assault."

Then are you saying she was raped too?

We think so.

- Swab the inside of her vagina. - Yes, sir.

The subclavian artery was cut. The heart was punctured.

Her heart was stabbed too, right?

All at once.

I found food in her stomach. It wasn't digested yet.

Does that mean she was murdered right after her meal?

Before she was murdered, her body was extremely stressed.

In that case, the digestive system stops working.

The cause of death. Cut subclavian artery and punctured heart.

The knife that went through this wound stabbed her heart.

We believe she passed away due to excessive bleeding.

She looked pale.

There were no bloodstains in the burial site.

It means that the killer drained out all the blood before burying her.

And the teeth marks are very clear.

- Is there a reason for that? - It's a postmortem mark.

The murderer bit the corpse?

If the murderer bit her this hard,

she would've resisted. Then the teeth marks can't be clear.

You said she was raped earlier.

Then we must have his DNA. He's done for.

We'll know once we get the sperm test.

You know the knot that was used to tie her hands and feet?

We'll write a separate report on that.

Hold on.

Wait a second. It went like this and that.

- Mr. Yang. - Yes.

Let me see.

I can't stand being curious.

I looked it up online on my way here.

It's a handcuff knot that was used to imprison people.

I found out that it was used in the military.

And one more thing.

If it pierced the heart through the subclavian artery at once,

doesn't that mean he's a pro?

Well, that may be true.

Even when you stab someone accidentally with a cutlet knife,

there are times when you rupture the heart all at once.

But it means he knew the location of the artery...

- and the distance to the heart. - Exactly.

Was it last month?

With a fruit knife, a woman stabbed a man who tried to rape her.

She stabbed the same location.

But she was a kindergarten teacher, wasn't she?

There are cases like this.

Gosh, he's something else. He is indeed.

- "Something else"? - I meant you were awesome.

Awesome. I'm sure the autopsy doctor has it right.

Excuse me. He's not an autopsy doctor. He's a medical examiner.

Oh, right.

We have to use that title now. I'm forgetful. My apologies.

By the way, the jerk who killed that woman...

He's not a first-timer.

The sperm test was a negative.

- What? - What?

He didn't even leave his DNA.

See? I'm telling you. That scum is a pro.

And we have the identity of the victim.

Luckily, her mother's DNA was kept in the missing-persons database.

We should really check on that.

Where is Hye-bin? Where is she?

We just finished the autopsy.

I can't believe this.

My poor daughter, Hye-bin.

Kim Jung-ran, Seong Hye-bin's mother

- Gosh, please calm down. - Goodness. You'll fall.

Please take a seat.

Gosh.

Ma'am, I understand how difficult this must be for you.

Since when did she go missing?

She went missing two days ago.

She left for her part-time job,

but she never came back home.

Deputy Chief Prosecutor Doh Ji-an.

You went for a hike on your first day. You're like an old lady.

I worked in the narcotics unit for five years.

I can't help myself but check the crime scenes.

May I take the Wuseong-dong hill murder case...

as my first case in the Eastern District Prosecutor's Office?

Why? Did you get attached to it because it's where you first went?

But Prosecutor Eun was already assigned to that case.

- It means she worked in vain. - It's a rape-murder case.

The victim is young enough to be her younger sister.

It'll be too hard on her. I mean, people have emotions.

No, I can conduct an objective investigation.

- To this day, I... - I saw how...

you couldn't even look at her body,

then you cried in front of the victim's family.

Are you sure you can be objective?

I think it'll be too tough.

She had a stab on the right shoulderblade, about 15.7 cm deep...

and 3.4 cm long.

Teeth marks on the left side of the neck.

Abrasion on her arms and legs. Bleeding from 14 places.

Cause of death, severed artery due to the stab on her shoulderblade,

and heart failure.

She lost all her blood right after death,

giving her the anemic condition.

Then they tied her hands and feet to abandon her body easily,

and buried her in secret by digging up...

a rectangular-shaped hole with a depth of 3 feet...

and two and a half feet in length and breadth.

I can conduct an objective investigation.

Prosecutor Eun has a great memory.

Doesn't she sound useful?

What was that? I never knew we had another talent here.

The more I find out about this place, the more I like it.

Prosecutor Eun.

Go over the initial investigation with Gangdong Police Station...

and report it to me later, please. No. Report it to me later.

Yes.

This isn't just any old knife.

I have the first analysis of Seong Hye-bin's drug test.

I didn't find anything.

It seems she doesn't even take cold medicine.

She's just a normal girl.

- Okay. - Autopsy documents for tomorrow.

Will you read them beforehand?

Leave them here.

Are you leaving right on the hour? Are you sick?

- Do you want me to do overtime? - I'll see you tomorrow. Goodbye.

Let's get some meat.

This is similar.

Death of a woman in her twenties in Wuseong-dong

Seong Hye-bin, job seeker

Give me that. Over there.

Okay.

Let's see.

Is this the first time you two met?

- Yes. - Say hi to each other.

This is Deputy Yang Soo-dong.

He gets angry when you call him "Deputy Yang,"

because that sounds like "chicken coop."

If his last name was Yuk, he would've been a kind of soup.

Deputy kind of rhymes with jeopardy too.

We're in a meeting to catch a murderer.

How can you two sit there and joke around?

Goodness.

My gosh.

Oh, hello.

I am Cheon Mi-ho, and I work with Prosecutor Eun Sol.

I look forward to working with you.

Look forward to what?

We can all just do our jobs.

- You're right. - What?

He's harsh.

- Hello. - It's all right with me,

so let's just keep all the old desks and furniture.

Don't get them changed.

It takes up time and money. What a waste, right?

- Yes. - Right.

- Are we all here? - Yes.

Let's greet each other later and go right into the case.

Sure.

Name, Seong Hye-bin.

Age 20. She was a job seeker.

She went MIA after she left work around 5 p.m...

at the convenience store two days before her body was found.

Did you find anything on the scene?

We found her wallet and belongings...

in the bag that was found next to her body.

But something was odd.

We found her credit card and cash in her wallet,

but only her ID was missing.

They left money and took her ID?

They were trying to trick us and stop us from identifying her.

It's so obvious.

- I know that. - All right, now.

The walk back home from the convenience store is...

a pretty deserted alleyway, so there's no security camera.

It's difficult to locate her whereabouts on that day.

So you have no leads?

I heard the first thing...

that detectives look for these days are security cameras and DNA.

It's not that. The cameras are...

Stop making an excuse.

We used to have no problems investigating without those things.

You have to get out there.

Do you all investigate sitting around at your desks?

That's the problem.

Right, I can do it without the security footage.

Deputy Yang, yes.

We don't run out blindly to investigate anymore.

Come on, everyone.

All right, let's do this, okay?

Mr. Yang, please find what I asked for in the morning.

- Yes. - What? What is it?

We aren't at the stage to tell you yet.

It's just an assumption. I'll tell you in time.

Okay. Let's get to work.

Can you bring the documents to me?

Can you wait one second, Mr. Yang?

- Mr. Yang. - Whatever.

National Forensic Service

The evidence for Seong Hye-bin's case.

One second.

That's where her ID would've been.

Your thumbprint gets left behind...

as you take this out, right?

There are many thumbprints.

A lot of people touch your credit card.

Then can you make samples of each one of them except for hers?

Prosecutor Doh.

- I brought it. - Give it to her.

- What is that? - Evidence.

What?

That looks pretty old.

- How long has this been? - 30 years.

That's a long time.

You'll see a part of a thumbprint on the buckle.

Please compare that with the thumbprints...

found on her credit card.

Prosecutor Doh, what are you doing?

I don't know.

How should I put it? My sixth sense?

Let's talk when we have the result.

Your sixth sense?

- Sixth sense? - Sixth sense?

Sixth sense?

Material, blade length, total length, blade thickness

Doctor Baek.

We have the analysis result of Seong's case.

Okay.

There he is.

Hello.

There were a total of eight thumbprints on the card.

One of them is a match with the thumbprint...

- found on the buckle. - What?

So the thumbprints on a 30-year-old evidence...

and today's are identical?

- Yes. - What's going on?

I told you. This wasn't their first murder.

Then which case is that belt from?

The Wuseong Serial Murders case.

- What? - What?

Wuseong...

A total of ten victims.

The serial murder that broke out around Wuseong-dong area...

between 1984 to 1988, for over five years.

You all know, right? It's one of the three most famous cold cases.

Don't you feel your blood boil?

Right, Prosecutor Eun?

This is a historical moment.

Then are you saying Seong Hye-bin's murderer is...

the murderer in the Wuseong Serial Murders?

But I thought people said he already died.

He killed ten people in five years.

He couldn't have suppressed his will to kill.

Come on, that's not right.

He was a young man 30 years ago. Why would he suddenly die?

What do you think?

We can't jump to a conclusion because the thumbprints matched.

- Mr. Yang. - Yes.

- All right. Take a look. - What is this?

Tied the knots the same way, killed the same way,

buried them the same way,

and the teeth marks after their death.

The patterns are exactly the same.

The thumbprint is the cherry on the top and the smoking gun.

The murderer in the Wuseong Serial Murders,

who's gone off the grid for 30 years after May of 1988,

is now on the move again.

Could he be a copycat?

As you said, this was a high-profile case.

Everyone knows what the murderer's routine is.

Would they copy his thumbprint too?

They're both partial, so we can't say for sure.

Okay. That's enough.

That's why I want to prove this through our investigation.

Then good luck with your investigation.

Let's go.

Okay.

What?

I believe we should begin the investigation...

by leaving the possibility that it could've been done...

by a copycat, or by someone who held a grudge against her.

Prosecutor Eun, you're objective. Let's do that.

But let me tell you one thing.

Criminals always make mistakes.

Those mistakes are opportunities for us, okay?

The serial from 30 years ago.

We just opened the Pandora's box.

Kang Hyun speaking.

Hello?

I'm Baek Ho-chul.

You have something to tell me, don't you?

I heard you were at the hospital.

I'd been looking for Han So-hee for a long time.

How long were you going to hide her?

You must think I'm despicable.

I know very well.

This tragedy...

was of my own making.

I thought Beom would give everything up for So-hee.

I was afraid.

I beg of you.

It was Beom's lifelong dream to study in the U.S.

But now he wants to stay because of you.

Is that what you want?

Can't you give up on him for me?

Okay.

I'll do that.

I never imagined she was carrying...

Beom's child at the time.

If I'd known, I wouldn't have done what I did.

You're mistaken.

That baby was my brother's.

It can't be.

After it was miscarried,

I ran a DNA test.

- It was Beom's child. - But...

How...?

I'm getting married.

You'll be an uncle soon.

I caused this disaster out of greed and ambition for my son.

So-hee...

has been in a vegetative state for over ten years.

I'll carry the burden until I die.

So please,

I beg of you as a father who has a son,

though I don't deserve to.

Please leave both So-hee...

and Beom alone as they are.

Why are there so many of them? What's going on?

They're called hyenas for a reason.

They took the bait called "Wuseong Serial Murders."

The criminal will be watching TV, right?

He'll be anxious to know we're onto him.

Right?

Hello, everyone.

Are you investigating the Wuseong Serial Murders?

Could you give a comment?

There's the prosecutor in charge. Sir?

- That must be him. - Over there.

Any comments?

Give us some details.

- They flocked over. - Oh dear.

Look at that.

- Any comments? - Talk to us.

- Fill us in. - How are things going?

What a mess.

Prosecutor Eun, it's a total disaster.

It got out of hand.

Reporters are saying the Wuseong killer woke up.

I don't know how and when they caught on.

"Wuseong killer" is the most-searched phrase...

on the main search engines.

On a mountain in Gangdong-gu Wuseong-dong,

the body of a woman in her twenties was found stabbed and buried.

The police are investigating.

The woman lost touch with her family after leaving...

her part-time job at a convenience store in Wuseong-dong.

She was reported missing.

Police noticed her fingerprints were badly damaged,

and that her wrists and ankles were tied using an unusual knot.

They believe the MO is similar to the Wuseong...

serial killings that happened between 1984 to 1988.

The Fearsome Serial Killer Awakes

You scored huge. The whole country's in uproar.

I tend to create big issues.

My nickname was...

The Rabid Dog, the Dobermann.

Rumors spread already?

A Dobermann never lets go once it bites.

I'll catch him.

I don't think we should exclude a copycat killer.

Fine. Just catch the killer.

The Prosecutor General ordered the police and us to set up...

a Wuseong task force.

We'll send over...

the medical examiner who autopsied the victim.

That'd be Dr. Baek.

I'll still show up to work here.

They won't let me do anything there. I don't like it.

Can he work on such a huge case on his own?

It's a serial.

As his superior, I should represent...

I heard that the task force already invited another examiner.

- Who? - Someone the President appointed.

The chair is here.

Hello, I'm Prosecutor Doh Ji-an.

Hello.

How are you?

It's been a while. Let's sit.

I'm Pyo Yoo-seong and I was asked to lead the team.

You all know this is an important case...

which the public is following closely.

Let's all work together and solve it.

- Sure. - Okay.

You played a huge role in catching serial killer Yoo Han-cheol.

You're the only person who can lead us on this case.

Will the NFS be joining us?

Yes, of course they will.

I invited only the best from each field.

I hope you'll back me up.

Sure.

Shall we begin?

The Wuseong Serial Murders.

From 1984 to 1988,

over five years in the Wuseong-dong area,

ten women were raped and murdered.

The investigation lasted 13 years,

and over 200,000 people were involved.

Over 17,000 people were considered suspects,

but they failed to catch the culprit,

and it became a cold case.

That's right. All the victims were killed,

and with no witnesses, the investigation made no headway.

But Lee Kyung-ja, the last target,

managed to get free...

and give us the criminal's profile.

The killer is about 5' 11",

wears size 8 shoes and is very strong.

He's very agile and is in his twenties.

But after his last victim got away,

the criminal went dormant.

That's the composite drawn based on Lee Kyung-ja's description.

This would be him 30 years later.

It's what we expect him to look like in his fifties.

The MO, the way he killed, is slightly different.

The location of the stab wounds and the method of disposal.

Serial killers evolve.

Anyone, when repeating a task,

is bound to find a way to do something quicker and easier.

Serial killer Yoo Han-cheol...

had a routine that involved cutting up his victims.

At first the cutting job was very haphazard.

Later on, as he became experienced,

he got good enough to cut at the joints.

He said something after we caught him.

"Chopping up bodies was so hard,"

"so I bought and studied an anatomy book."

That's right. He did research.

Look at the fingers, how he cut off the fingerprints.

He's not an ordinary guy.

Okay then.

First.

He makes sure the bodies are found late.

Second.

He makes sure to delay the victim's identification as long as possible.

That's the Wuseong killer's routine.

In the beginning, he left the body at the crime scene.

After the third murder,

he hid them in agricultural waterways or mountains.

From the fifth, he started to bury them.

Did you find anything during the autopsy?

He used a unique weapon.

I'm trying to identify...

Did he use the same weapon 30 years ago?

- It's possible but not confirmed. - That's fine.

On this victim's body or at the burial site,

did you find the criminal's DNA?

No, we didn't.

Isn't extracting DNA the most important of the NFS' duties?

If the killer insists on using a unique weapon,

that too can be a clue.

So are you telling me that we should catch a serial killer with a knife?

Pardon?

How small a clue may be, as long as it's relevant to the killer...?

Why do you think the killer wasn't caught 30 years ago?

The police utilized a lot of manpower to catch the killer.

Do you know...

how Yoo Han-cheol who killed 26 people was caught in 2003?

We checked 50 bus routes, thousands of subway security footages,

and 300,000 telephone circuits thoroughly.

Deploying people isn't the answer.

Dr. Baek.

- You're hanging onto minor things. - Minor things?

Do we rate the wounds on a body?

Well, why don't we do both?

The NFS will follow up on your lead.

And we can investigate her acquaintances and hometown.

Please check the network record from the base station...

near the convenience store, and her home around the time...

she'd gone missing.

And check the alibi of every man in their fifties near the location.

Yes, sir. I'll get right on it.

We can't overlook the possibility of a copycat.

The internet is where the copycats get most of their information.

We're searching every website regarding crimes.

Sure, you can continue with that lead.

Is there anything we can use from the investigation 30 years ago?

You can hear all about that in person.

Do you know what I got the most...

when I was investigating the Wuseong Serial Murders?

- "You still haven't caught him?" - "You still haven't caught him?"

You must've gone through a lot.

That time, I was diagnosed with degenerative arthritis.

I'll be in this wheelchair for the rest of my life.

There were times we got close to catching the culprit.

Remember? There was a survivor.

- You mean Lee Kyung-ja? - That's right. Lee Kyung-ja.

The tip of the knife missed the heart by a whisker.

That's how she survived.

She climbed down to where the houses were and made a report.

We were all dispatched and blocked every single route.

But we lost him in the end.

We should've caught him then, right?

We tried everything we could at that time.

Our captain... Was her name Um Ji-hye?

You know the first victim?

He even went to her home and slept in her bed.

He wanted to meet her even in his dream.

- My goodness. - Darn it.

- You should've been more careful. - I'm sorry.

- Are you all right? - Look at this. It's all ruined.

- That's all right. - I'm sorry.

You may go.

I feel terrible for Captain Ham.

The higher-ups pressured us to catch the killer.

His detectives complained that they were struggling.

He was caught in the crossfire and ended his own life.

The article left by Captain Ham was...

the first victim's photo.

Director Park.

It's about the Wuseong Serial Murders.

The first victim, Um Ji-hye, from 34 years ago.

You performed the autopsy.

Name: Um Ji-hye

That's right. Yes, I did the autopsy.

I think it was my first case at the NFS.

The knife touched the rib, right?

Right here. This one.

34 years ago, the killer...

wasn't good at using the knife. He stabbed the bones in several places.

Did you find any traces of the knife on the bones?

Looking at the cuts, I think the blade must've been destroyed.

That's a possibility. However,

we didn't have the technology to detect the substances back then.

Dr. Baek.

If you need to see me, come to Headquarters. What is it?

Find me a body. Okay?

Her name is Um Ji-hye. This is urgent.

- Hold on a second. Dr. Baek. - Yes?

Are you asking me for a favor?

What?

Remember this? The recording...

Thank you.

I want another recording like this.

"Do me a favor." How about this? Can you do it for me?

Okay, okay. Here you go.

- Get out, you jerk. - What?

- Get out. - What?

Get out now.

Luckily, the family buried the body and didn't cremate it.

I sent the address to Mr. Jang's phone.

I think it's over there.

Dr. Baek, it's really spooky here.

We might see ghosts.

Dr. Baek!

That's just mud. And your face is scarier.

Come quickly.

I think my foot got stuck. You need to hold me.

Wait. My goodness. Darn it.

The soil must be very wet.

- We might have a chance. - What? What chance?

Request for its substance analysis. It's urgent.

- I think that might be right. - Can you pass that over?

His looks are a separate matter. He's known to have a temper.

When you search...

Sir.

Gosh, what brings you here?

I came here to tell you something important.

Okay, please come this way.

Welcome. What brings you here?

This.

These are the files on the guy we were chasing 30 years ago.

I see.

Here.

Kang Chi-soo. He was 24 back then.

His height was 5' 11". His shoe size was 8.

This fits the profile of the killer.

I met thousands of suspects.

I can't forget about him even until this day.

Talk, you jerk!

It's you, right?

You're trying to get your number up by arresting innocent people.

Do you think I don't know that?

- What? - Don't patronize me.

Do you have evidence?

- I asked you if you had evidence! - You scumbag.

He was released due to lack of evidence,

but he left the country right away.

But we heard that a few years ago,

he returned to Wuseong.

What? If that's true, something is definitely brewing.

- Locate Kang Chi-soo right now. - Yes, sir.

But by the way,

only the writer can read this. I can't read his handwriting.

Back then we wrote up reports by hand.

I'm known for my terrible handwriting.

Actually, we were having a hard time reviewing the past documents.

What do you say? How about you lend us a hand?

We're old now. I'm not sure if we can help.

Don't say that. You already helped us a lot.

- Let's do this then. - Gosh.

Soo Photo Studio

- Excuse me. Did the owner change? - Yes?

No, it's the same owner.

- I see. Really? - Yes.

I just thought that it didn't taste the same anymore.

Oh, you don't like it?

No, no. It's better.

- Please enjoy your meal then. - How long have you been...

- working here? - It's been about six months.

Name, Kang Chi-soo.

He's 54 right now and still single.

He went abroad and majored in photography...

after the Wuseong Serial Murders,

then came back five years ago and opened a photo studio.

Where was he on the day of the incident?

Kang is a bit unusual.

He doesn't use a cell phone.

That's why he wasn't found on any base station records.

And he's always on the same schedule.

He opens his studio at 10 a.m.,

eats lunch alone at a nearby diner at noon,

closes the studio at 8 p.m.,

works in the darkroom until late at night,

and comes home after 12 a.m.

He's very meticulous.

Seems obsessive.

The murderer is the same.

He always made the same knot and did everything the same way.

Also,

this alleyway has...

no security cameras.

Goodness.

There's a possibility he chose that place on purpose.

That photo studio has a darkroom.

All lights are blocked out.

- It's a perfectly secretive room. - This is rather interesting.

The first victim, Um Ji-hye. Let's re-do her autopsy.

What?

- Why? - Murderers make...

the most mistakes on their first murder.

Re-doing her autopsy?

- With a 34-year-old body? - Back then, something was left out.

- What is it? - I have to look at the body first.

There's no need. It's decomposed. You won't find a thing.

Are you suggesting that we should be inattentive?

Doctor Baek, watch your language.

What did I say wrong?

I'll take the responsibility.

Prosecutor Eun. Are you sure it'll be okay?

It won't be easy to persuade the family.

If there's even a little possibility that a case or a suspect...

from the past has anything to do with this,

then shouldn't we re-investigate it?

I'm curious to know what we'll find.

That's a waste of time.

Well, at this stage, I agree...

with Prosecutor Eun that we should keep all possibilities...

on our minds as we investigate.

- Prosecutor Doh. - I'm sorry, sir.

I'll take care of the result.

Prosecutor Eun, you can work with Lieutenant Cha...

and get the project going by persuading Um's family.

We'll keep digging behind Kang Chi-soo.

Okay. Let's get to work.

Goodbye.

Hello?

Excuse me.

Hello.

You have the wrong place. There's no one here...

Oh, it's not that.

We're from Seoul Eastern District Prosecutor's Office,

Ms. Im.

Im Sook-ja, age 69, first victim, Um Ji-hye's mom

- You can have some juice and go. - Ma'am.

We have something to discuss with you.

We re-opened the case. We'll take in the murderer and...

I don't care if he's caught or not.

So don't ever come back.

I finally forgot all about it.

- Why are you doing this again? - You never forgot.

Not even once.

That teddy bear over there.

The Wuseong Serial Murders. From 1984 to 1988,

over five years in the Wuseong-dong area...

That's...

the same teddy bear that Ji-hye had...

on the day of her death.

One of our detectives...

still keeps...

Ji-hye's picture in his wallet.

This time,

we'll catch him for sure.

Please.

Help us out.

Goodness, Ji-hye.

I'm not sure if we'll even find pieces of her bones after 34 years.

I know.

- Goodness. - Look at this.

My goodness.

She must have a deep resentment. She didn't even decompose.

How is this possible?

Adipocere.

- What? - What?

If you get buried in a humid and sealed place,

the fat in the body gets hydrolyzed and turns into...

fatty acid and glycerin. And when ammonia gets combined,

the body becomes wax-like. It's kind of like soap.

- And decomposition stops too. - Did you expect this?

The soil has a lot of moisture,

and has a lot of minerals like magnesium and calcium.

It's the ideal condition.

Bring it back as-is.

- Hello. - You're here.

- Hello. - Great work.

Current time, 3:45 p.m.

Let's begin the autopsy.

Adipocere.

"Adipocere."

Show me the pictures from the past autopsy.

We'll look into the chest.

It's way too decomposed.

Would we find anything in there?

Chest area, multiple stabs.

"Chest area, multiple stabs."

Multiple cracks and fractures...

in shoulder blades and ribs.

Loupe.

What's he doing?

Scalpel.

You two, come here and start scraping.

Scrape everything off of the bone, and request for substance analysis.

I don't think we need to stick around any longer.

Keep watching until the end,

and let me know if you find anything.

Yes.

- Start scraping. - Right.

What are you doing?

There's something stuck on the bone.

We're going to scrape it all out and get it analyzed.

What can you find out with that?

We'll only know when we have the result.

Partners for Justice

Nodules: More than one strand of thread is entangled

Photo Studio

- Excuse me. - Yes, hello.

I need a picture for my ID.

You can take a look in the mirror and sit over there.

Okay.

Where's your restroom?

I really need to go.

Sir.

That's the darkroom.

Oh, really?

Goodness, I really have to go.

Here you go. That'll be $7.

Okay.

Looks good.

Taking ID pictures is the most difficult thing in the world.

Here.

Here's your card.

Thank you.

Come again.

Yes.

I'll hand it over to the NFS to be analyzed.

Investigator Yang speaking.

I checked the fingerprint on the credit card.

- Is it a match? - No.

It's not a match to the Wuseong killer.

What? What did you say?

That can't be. It must be wrong.

- Check again. - Give me that.

It's Doh Ji-an. It's not a match?

- Are you sure? - I'm positive.

Okay, thank you.

What's happening?

Sir, something must be wrong.

It's a partial print. We can't be 100% sure.

- It's not over yet. - What do we do now?

Wuseong Serial Killer Victims

Survivor, attempted murder

A witness.

Let's fight to the end.

Lee Kyung-ja

I even changed my name to get away from it all.

I have nothing to say.

Did you hear that we found another victim?

Yes.

There were ten victims 30 years ago.

No one knows how many more there'll be.

Seong Hye-bin, the 11th victim.

She was just 20.

Your age at the time...

was 20, right?

Even if I wanted to help,

he was wearing something over his face.

I really didn't see anything. I don't remember much.

There still is a way.

Breathe deeply and slowly.

Once you fall asleep,

you'll go back 30 years in time.

I was on my way home.

There's a man over there.

Just go by.

Just go by. Just go by. Just go by.

It suddenly went bright.

It's like I've become blind. I can't see.

I hear something.

He's digging with a spade.

He's digging the soil.

I made a noise, and he's coming over.

Please save me.

His face is all black.

He keeps looking at me. He's looking at me.

He won't say a word.

Gosh.

Dr. Baek.

Dr. Baek.

Hey.

What is it?

The substance on the adipocered body's ribs is carbon steel.

Steel? With carbon?

Not stainless steel?

Kitchen knives aren't made with carbon steel.

What blade is it?

- What are the specs? - 1080 carbon steel.

Find all blades made with 1080 carbon steel.

In the middle of the night?

Searching all the knife shops will take...

at least two to three days.

- Pack all the dummies. - What for when we have no blade?

- There are blades. - Where?

There just are.

Get packing.

- Be careful. - Watch out.

- What's all this? - How do you live here?

These are real blades, so be careful.

This is crazy.

This must be why he never comes home.

You're not here to ogle. Let's work.

- Hold tight. - Okay.

1, 2, 3, die!

Measure that.

Depth 10 cm.

Length 4.5 cm.

It's too thin.

Measure.

The length is...

1.7 cm.

No match. Next.

Gosh.

I don't think he would've used that.

Is this too big?

You did well.

You won't have to come here again.

Okay. Thank you.

Take her home safely.

Yes, sir. Come with me.

Soo Photo Studio

This is crazy.

- Mr. Yang. - I don't see Kang Chi-soo.

He should be in his darkroom now,

but he closed the studio and disappeared.

What?

Can we confirm if Lee Kyung-ja's home?

I'll call and check.

Hi, it's Cha Soo-ho.

Did the witness, Lee Kyung-ja, arrive home safely?

What?

Okay... Just a moment.

She got out of the car and went off on her own.

He called to see if she's okay, but she won't pick up.

- What? - What happened?

- Keep trying. - Okay.

Measure that.

Depth 15 cm.

Length below 3.5 cm.

Width 0.6... Doctor.

This is it.

We got it.

I almost died.

The military M7 bayonet.

Made with 1080 carbon steel.

I didn't turn the lights off.

Partners for Justice

She was the 11th target and only survivor of the Wuseong murders.

I told you to catch the killer, and you lost the only survivor?

Do you think they'll disband the task force?

The facts the body leaves don't lie.

Your assumption is interesting too.

I'll check for blood.

It's all blood.

- It's done. - It's over. We got him.

It's all my fault. I'm sorry.

What on earth had happened?

Partners for Justice