Original subtitles

Definitely not an accidental death.

I have enough circumstantial evidence to prove it as a murder

and you are the only one

who can reveal the truth of this case.

The cause of death is suffocation

from respiratory root paralysis due to neurotoxin.

-One is down. -What's the plan now?

We need another case to make this one go away.

Celebrities, drugs, and sex.

Look at this.

This is the disease code for snake venom.

Isn't he picking a fight against you?

-Who was it? -Yes, Jang Cheol.

-You can't go home. -What?

Do Ji-han's there.

Come back to the office right now.

Don't even think about trespassing.

A rejection?

We're literally in front of the house. And there's nothing we can do.

I wonder what's inside this house. So much that everyone stops me.

Let's go back for now.

Oh my god.

Let's go, Mr. Do.

Mr. Do!

Wait.

Mr. Do!

You'll get punished for coming here like this without a warrant!

This is crazy.

Did you get anything from Park Yeong-su's clothes?

No. Except for the dirt from the mountains and regular dust,

I found nothing suspicious.

I scraped everything under his shoes and found nothing unusual.

-Got nothing? -No.

On the cheongju bottle we found at the scene,

we found Park Yeong-su's prints.

On the mouth of the bottle,

we found his saliva DNA.

There were no other DNAs.

I think he drank from the bottle himself.

No traces of others.

This is Baek Beom.

Doctor, I need your help.

-What is it? -I'm at Jang Cheol's place.

Please process the scene.

-Okay. Send me the address. -Okay.

Mr. Do, if you call NFS too, then it becomes a big deal.

What's in your mind?

I'll take responsibility.

Let's wait outside, so we won't contaminate the scene.

Goodness.

-Get ready to go to the scene. -What?

Where?

You'll see.

It's an emergency.

Where's KCSI? They aren't here yet?

KCSI won't help us process the scene.

Trust me and do the inspection.

The house looks abandoned. Whose house is it?

It's Doctor K's house.

Doctor K?

Really?

No wonder it looks horrifying.

Inspect objectively without any prejudices, okay?

-Okay. -Get ready.

Gee. We're here.

What is this?

Did he already pack and move out?

No.

If there was furniture, there should be traces of it.

But there's none.

He lived like this.

How can a person live like this?

That's why he lived cleaning up after murders.

This is not an ordinary house.

Let's check the bedroom.

What is this?

This is a monitor for a patient in the hospital.

Wait.

Look at the dust.

It's full of dust. It wasn't used.

Dr. Baek.

This room. That empty bed.

This is the only thing she draws these days.

But that's not what our bed looks like.

This isn't our bed.

This is the same as Seo-hyeon's drawings.

What are you talking about?

Dr. Baek, is this Dr. Jang Cheol's place?

-Is it? -Yes.

Wait. You said it's Doctor K's house.

Then Doctor K is Dr. Jang?

What are you talking about?

Look at this.

Isn't this the murder of Yeong-su?

It's the snake, right?

Did Dr. Jang commit the snake case too?

He drew the snake too.

Did he unleash snakes in the mountains to kill?

-Do you want to try if it works? -No.

I made a rash assumption. Sorry.

The killing spree.

The cord for hanging.

The structure of the restroom where the blood was found.

The lighter fluid used for arson.

The fact it was Seonghu Motel's Unit 407.

All that information weren't disclosed to the public.

The details that only the perp knows.

This is enough.

We found evidence,

so request a post-warrant for search and seizure.

-I'm on it. -Hold on.

Did you call us without a warrant?

Well, it was urgent.

That's why KCSI wasn't here!

Is that so important?

This is Doctor K's hideout,

and he went into hiding after quitting the hospital.

-He vanished? -I'm sorry.

-It was urgent. -Forget it.

Swab and collect every trace evidence.

Don't miss anything.

How could…

How could Dr. Jang…

Are you all right?

I knew you were suspicious of him,

-but-- -Su-yeon.

If you can't do it, get out.

Go ahead. I'll take it.

No, it's an important scene for me too.

My little Seo-hyeon was here.

I'm on it.

Collect all these pens

to check the substance from his fingers.

Textbook of Surgery.

Forensic Pathology.

Toxicology.

Hematology, Bone-Marrow Transplantation.

It covers everything.

Snake Venom.

Snake's poison.

Is this his mother?

I think so.

She's not smiling.

It looks like a graduation photo.

I'll take it.

Isn't this a bloodstain?

Yes, it's a bloodstain.

Dr. Baek.

The bloodstain is only on the shattered center.

He smashed it himself. Swab it.

Look.

They are women's clothes.

This looks like the clothes

the woman was wearing in the graduation photo.

You're right.

That means Jang Cheol lived with his mom?

No.

-He lived here alone. -Okay.

I don't see traces of a woman living here.

He said he helped his mother taking medication.

What was that about?

There's medical equipment in the bedroom when it doesn't seem there was a patient.

His clothes aren't here, but his mother's clothes are.

Did his mother drop by from time to time?

I don't think so.

If she lived here, her shoes should be at the entrance.

There they are.

Why did he keep his mother's clothes and shoes

when he doesn't even live with her?

These are all migalastat.

What are they for?

Fabry disease.

The patients with a rare genetic disease with enzyme deficiency take this.

Orally consumed.

I got it.

He left his journal and shoes,

so he didn't have time to clean the house.

Find if anything suspicious happened around here.

Got it.

Take all these pill bottles.

Find every residential trace.

DERIVED FROM THE MISSING FOSSILS IN THE EVOLUTIONARY PROCESS

REFERS TO UNSOLVED, HIDDEN SPOT

What? Dr. Jang Cheol is Doctor K?

Well, I didn't have any clear proof,

but I was suspicious too.

He went into hiding, so we're tracking him down.

Did he run?

-Should we issue-- -Prosecutor Eun. Listen carefully.

Chasing Doctor K is different from chasing other suspects.

I can't explain everything right now,

but we can't trust anyone at the Eastern DPO anymore.

Do you think Sungjin is involved too?

But you can't do it alone.

If you need help, find Song Ji-su at SPO.

Okay.

You're the only one I can trust now. Thank you.

I'll do my best to handle it on this side.

Goodness. That was boring.

How can you say that?

It's over. Until when do I pretend to be sorry?

Pathetic.

I'll do the lines. You do the face.

-We trust you! -I love you!

We believe you!

The body of the alleged victim

didn't have any trace of sexual assault or drugs.

We want you to know that we'll counterclaim her

for false accusations and defamation.

We want to reveal the false allegation in detail

so that there will be no future victims

who suffer just because they are celebrities.

Kang Jun-seo, please say something.

How do you feel?

I'm sorry for making you worry.

I sincerely answered every question.

This is enough.

-Was it a false accusation? -Jun-seo!

-Please say a word! -Jun-seo!

You're here.

When is Mr. Do coming?

Did Mr. Yang contact you?

Mr. Do won't be helping us with An Ji-hye's case.

But this case has become huge with the media and all.

We will continue unaffected by the fuss they make.

Did we get the initial report from Gangdong Police Station?

Yes, but it's a piece of crap.

The water happened to burst that day in the server room under the club,

so all security cameras went off. Does that make sense?

If you look at the list of confiscated items,

you won't see any security cameras.

They give time to erase the videos.

Hey, working hard?

The GHB case? That looked tricky.

I'm just going to take back my cases.

Why are you taking the files?

You haven't heard.

I'm back as the head prosecutor. Happy to see me?

-Yes. -Congratulations.

Thank god it was a reprimand.

That effing jokbal.

I stopped eating pig's feet since then.

I was kidding.

Anyway, I look forward to working with you again.

I'll get going.

What? Just a reprimand?

Mr. Gal's nagging has started again.

Okay, let's continue without getting affected.

Mr. Kang, please check Gangdong Police's initial investigation.

Let's start by investigating the testifiers at the club.

Gal Dae-Cheol means big and firm.

I will never break.

HEAD PROSECUTOR GAL DAE-CHEOL

Are you in a place to be happy about the head position?

Do Ji-han requested a post-warrant to search and seize.

A post-warrant?

Yes!

Do Ji-han barged into Doctor K's house without a warrant

and found the blueprint for the killing spree!

That bastard!

I told you we can't handle him if he goes nuts.

What if Doctor K

gets caught by Ji-han?

-We're all screwed then. -Mr. No.

-Don't you get it? -What?

Do Ji-han, that meticulous bastard, has started to cross the line.

Are you all right? Dr. Jang and Seo-hyeon--

We're busy. Get to work.

I still can't believe it. How could he…

The house was deserted.

No one seemed to touch the kitchen.

How did he live there?

Frankly, I still can't forgive him.

He even killed a person.

I'd never imagined.

Killed a person?

Oh my god.

Dr. Jang, how did you do that?

Su-yeon! I knew it.

You can't think about him.

I'm not thinking about him.

Hurry and work. It's urgent.

What is this?

Why?

I may be able to find out where the soil is from.

I compared the soil on Jang Cheol's shoe sole in the entrance

and the soil from his mother's shoe we found in the closet.

They are completely different.

Different?

Also, these shoes are so old that there's barely any DNA left.

How old are they?

No one wore them for years.

Then the soil on the mother's shoes

is from Jang Cheol's past.

What does that mean?

The soil on Dr. Jang's shoes had traces from the city, such as asphalt.

His mother's shoes had typical coastal soil.

Coastal soil?

We have three coasts, the east, south, and west.

Each coast has a different soil class.

To identify which coastal area it was from,

I looked into the properties of the marine sediment.

Because each coast has a different amount of organisms and minerals.

So where is it?

The soil on the shoes of Dr. Jang's mother

is possibly from the southern coast.

Among them, it's highly likely the one with mudflat.

The southern coast is too large to search!

-It's smaller than the eastern coast. -The southern coast.

The southern coast.

There's a way to find out.

M7 Club.

Ms. Eun, I think

there is a protecting influence within Gangdong Police.

The GHB case was first assigned to Women and Youth Division,

but it was suddenly transferred to Economic Crime Team.

Why does Economic Crime Team take a sexual assault case?

You know.

Some police always act like pigs.

Those bastards are on the clubs' side

and have their back.

Because of these pigs, people think we're all corrupt!

This is what pisses me off!

I met with the testifiers, but none of them saw An Ji-hye.

I told you. They got their stories straight already.

The ones who have a connection in Gangdong Police

shut the employees up, of course.

Ms. Eun.

An Ji-Hye's video in the hotel hallway is all over the internet!

"Gold digger video."

That's the most searched word.

What? The video got released?

-Yes. Look. -Let me see.

What the heck? We can see her face!

How did it get leaked? The investigation is still in progress.

I know. The comments say,

"Never seen a gold digger like this."

"You messed up with the wrong person."

"I'll dig everything about you."

What if An Ji-hye becomes a victim of doxing?

They mobilized Kang Jun-seo's fan club.

-That's scary. -What do we do?

AN JI-HYE

Hello, Ms. An.

Ms. Eun, please help me.

Ms. Eun,

I'm not a gold digger.

You trust me, right?

Ms. An.

I shouldn't have said anything.

What do I do now?

-Calm down first. -Please help me.

What if they all find out about me?

No one knows about this.

I'm scared.

Ji-hye, it's mom. What are you doing?

Mom, I'm taking a shower.

This isn't you, right? It's wrong.

What happened? Tell me.

Ji-hye.

Open the door right now.

It's all because NFS couldn't find GHB.

Did NFS send the second report?

Not yet.

Come on.

It's done.

COMPONENT ANALYSIS

Darn it! It's negative again.

This is driving me crazy!

Sally, did you stay up all night?

Did you eat at all?

How could I eat?

Well. Is it that hard to detect GHB?

Seong-ju told me

that NFS has never detected it in the body.

Its half-life is so short, so its metabolite disappears quickly.

This bastard!

There's no way to prove then. Will you try it again?

Yes. You said you'll try it until you get it.

What about Park Yeong-su's urine?

Here.

-Nothing? -You're right.

What's wrong these days?

Gee. You were all proud of being the god of autopsies,

but the snake venom got you.

Nothing got me.

Yes, Ms. Cheon.

Ms. Eun, An Ji-hye is coming. She has something urgent to say.

She does?

What am I missing?

Huh? Blood, stomach, urine.

All nothing.

What do I have to see next?

What's next?

Are you asking me?

You didn't miss anything. You're too meticulous to miss anything.

I'm definitely missing something.

What is it?

Do you want some ramyeon?

If you chew, it will stimulate your brain.

All you think about is food?

I don't need these. I have to look at a different side.

Prep the autopsy.

Every time I try to eat something.

What else are you looking for?

The fluid inside the body. Spinal fluid and vitreous humour.

Start with the vitreous humour.

Prep it.

Hold.

I'm holding.

Next, spinal fluid.

Dr. Baek, aren't they only for spinal paralysis from medical malpractice?

Did you see if he got spinal anesthesia yourself?

No, I didn't.

Flip him over.

Spinal needle.

NEEDLE FOR COLLECTING BODILY FLUID

Here.

Ask Sally for emergency toxicology.

Ask her nicely.

Then you stitch him up and wrap it up.

-You decide when to wrap up? -You got what you wanted.

I won't finish it until I got something.

-Hurry. -Okay.

Ms. Eun,

I want to stop now.

I will drop charges against Kang Jun-seo

as if nothing happened.

What are you talking about?

You wouldn't understand.

I'm about to lose it.

I am on a leave of absence, and I don't know if I'll ever be back.

Don't blame yourself. It's not your fault.

Then why am I sold to the public as a gold digger?

Whenever I go out, I feel like everyone's staring at me

and talking that I'm a gold digger.

I can't bear it!

You don't even have proof.

If you were me, would you continue?

Ji-hye,

I'll paint you a realistic picture.

If you drop all charges now,

they will seize the chance and sue you for false accusations.

Also, they'll ask you for compensation for damages

and defamation from tarnished images.

They will come after you.

Right. Giving up doesn't necessarily mean the end of the fight.

We can't force you to go on.

But we're doing our best to investigate the case.

I hope you know that.

-Hello? -Is this An Ji-hye?

Yes, who is it?

I'm Attorney Yu Tae-jun. I have something urgent to say.

Rinse it.

Hemorrhage inside the esophagus. Three spots.

Scratches.

How can an esophagus get scratches? Hemorrhagic esophagitis?

Are you going to keep bickering?

I'm sorry.

-Write them down. -Okay.

Three hemorrhages in the esophagus. Scratches.

HEMORRHAGES IN ESOPHAGUS, SCRATCHES

Dr. Baek, what's up?

Didn't you finish his autopsy?

I didn't. Who says it's finished?

What happened with the vitreous humour and the spinal fluid?

I guess it's the day of nothing.

-I got nothing from them. -Again?

Dr. Baek, I just got out

while Dr. Ma's in the restroom to let you know about the results.

Don't ask me anymore.

Dr. Baek, didn't he die from the snake bite?

Post-mortem angio.

Bone 3D reconstruction showed nothing wrong.

Blood, urine, vitreous humour, spinal fluid.

Tox report got nothing.

Heart, liver, lungs.

The major organs had no lesions.

The brain didn't have anything to cause…

I got nothing.

How come there's nothing?

Dr. Baek.

Park Yeong-su.

What on earth happened to you?

Dr. Baek, who are you talking to?

Did you just ask him? Good gracious.

You're talking to the dead body. I know it's hard.

-But you don't do this. -Hey.

I was talking to myself.

Can't I talk to myself?

Scalpel!

What is it? I'm busy.

You know this guy, right?

He's pretty.

-Who is this? -Jang Cheol.

You call him Doctor K.

Remember?

Mr. Lim Ha-su.

On May 23rd, you were at a container in Incheon.

And you called someone saved as "Doctor K" on your phone to come to you.

Correct?

How do you know him?

I already told you.

-I don't know him. -Lim Ha-su.

Chun-sam Clan's number two. Born in Beolgyo in 1978.

-You're from Beolgyo. -So?

Beolgyo.

Southern coast. Mudflat.

Jang Cheol's also from Beolgyo, isn't he?

I said, I don't know.

This is over.

-Sit down, bastard! -Why don't you sit?

Or Mr. Do will turn on the Dobermann mode.

You know, the hunting dog?

-Once it bites, it never lets go. -That's funny.

You already put me in jail, didn't you?

Lim Ha-su.

-You got five years for the drug case. -So?

After four years and eight months, you will get excited.

Like a soldier ready to be discharged, you won't even sit still.

When you're about to get released,

for brokering drug sales,

you'll get seven more years.

Then you're back to jail.

-Still don't know him? -This is insane.

I say I don't know him because I don't.

A charge is added whenever you say you don't know him.

All right.

Let's travel around.

Why are you doing this to me?

You made illegal drugs too.

When you're about to get crazy missing the air outside,

I'll use this at the right timing.

This is habitual, which means you'll get more than ten years.

Still don't know him?

Why are you after him all of a sudden?

A National Tax Service agent was digging up a major company.

He's having a baby next month.

-He died yesterday. -He died?

He was murdered by Doctor K.

Doctor K doesn't kill people.

I guess you don't know--

No! Cheol won't do such a thing!

Tell me what you know about Jang Cheol.

How you met him

and what he did

in chronological order.

He lived next door when we're young.

Cheol.

Come here.

Hide in there.

Where's my son?

You saw him, right?

He went that way.

Jang Cheol. Son!

Cheol, she's gone.

Hey.

Did you got beaten again for being second-best in school?

Why is your mom so greedy?

She's scary.

Did you get hurt?

-It was by a knife. -You can't leave it like that.

It will fester.

Goodness. You're good.

You're a doctor.

Be a doctor when you grow up.

That boy.

He was brilliant.

But I lost contact too.

Bastard, say it already!

I did! That's all!

You bastard!

Mr. Yang, it's all right.

Give me the old address.

What kind of job are you doing?

Why?

Why is Park Yeong-su's body still in NFS?

Dr. Baek is conducting the second autopsy for four hours!

What?

-The autopsy was over. -He's doing it again.

You know how he is.

He won't stop when he's into it.

This is ridiculous.

If he finds something, we're hopeless.

Don't you remember how he got us with the spree killer case?

-Do the job right. -Hey.

How dare you order me?

Sungjin pulled its string in Ministry of Justice

and canceled your punishment for you to do the job, understand?

I got it.

For goodness' sake.

NATIONAL FORENSIC SERVICE

I'll rerun the biopsy of the area bitten by the snake.

-Scalpel. -Dr. Baek.

We did it thrice. There's no lesion.

What does autopsy mean?

An autopsy is an autopsy.

It means to observe with your own eyes.

Scalpel.

Tissue cassette.

Hey, Dr. Baek.

Let's follow the protocol.

-Stop the autopsy! -What?

His case is closed as an accidental death.

The autopsy order from this morning was retrieved.

And you started the autopsy without permission?

Dr. Baek, what do we do?

What do you mean? We continue.

We can't do it without a command. We'll get in trouble.

Turn the speakers off and lock the door.

I'll turn in the written apology.

Get your hands off.

Dr. Baek,

you don't lose your composure when it comes to autopsy.

This isn't like you. What's up with you?

Do I quit when I got nothing?

If you got nothing after ten hours,

you've done enough.

Mr. Park, take him out.

You know what happens if an autopsy is done without our command.

-Get the body out. -Yes, sir.

-You can't! -Dr. Baek!

This foot has to be sutured before we take him out.

Remember what you told me?

The body should look more beautiful after the autopsy.

Right. That's the principle.

I won't let his family see the body with his foot like this.

Okay. Hurry and suture it.

-Suture. -Okay.

Cut.

-Get the body out. -Yes, sir.

I'm sorry you didn't get the tissue.

Where are the suture and needle? Get them.

-Why? -Hurry and get them.

Here.

-Tissue cassette. -Tissue cassette?

-Hurry before it gets contaminated. -Okay.

Did you take a tissue while suturing?

Or would I let them steal the body? Bring it.

-Dr. Baek, that's our Grumpy Beom. -Be quiet.

-Put it right. -You don't know how to give up.

-You realize that now? -I will always support you.

Careful.

-Store it carefully. -Okay.

Dr. Park, you always make the right decisions.

As a civil servant, I have to follow the legal procedure.

You did the same thing nine years ago.

Were you at NFS's central branch back then?

The alleged matricide.

-A matricide? -Yes.

A medical student allegedly killed his mother.

Hey. Are you her son? Wake up!

Don't touch her.

We have to put the plastic sheet before putting her down.

You were so careful and called it an open verdict.

It seemed evident that it was a homicide.

Because of your report,

I couldn't charge him.

But the boy became a doctor.

He helped NFS the other day. You didn't recognize him?

-What? -Dr. Jang Cheol.

-He's the guy. -What?

You only conducted the autopsy of his mother,

so no wonder you didn't recognize him.

Why are you telling me these now?

Well, it's nothing.

I just wanted you to know.

I plant a useful seed in NFS.

-Baek Beom will stay quiet. -Good job.

-It was a long day. -No.

It's not over yet.

We only got his connection to a criminal organization.

289 Changdong-li, Beolgyo-eup.

Beolgyo.

Beolgyo.

Jang Cheol came to Hanju Hospital this February, right?

Yes.

Mr. Gal came to the Eastern DPO this February too.

Before that, he was in Beolgyo Office.

Wait, that's true. What's going on?

A coincidence?

A coincidence?

Conjunctival petechiae.

Edema.

Soft-tissue hemorrhage.

Hemolysis.

Typical signs of hemotoxin.

HEMOTOXIN: TOXIN IN BLOOD

The circumstances say homicide, but there's no evidence.

Dr. Baek.

I stored the tissue of Park Yeong-su's ankle bitten by the snake.

Okay.

What else are you looking for? We've done enough.

Even you are a no match to a snake.

Trying to bite me too?

No, that's not it.

In the autopsy, you always tell us to be the perp

and find the cause of injuries easily.

But not this time.

It's because our suspect is a snake.

Exactly. It's not that you can be a snake.

You can be a grumpy tiger,

but not a snake.

-Why not? -What?

-I can be a snake. Right? -Yes.

How is that possible, though?

-Get ready. -Why? Where are you going?

To become a snake.

It's the snake.

Dr. Baek, wait!

Hey, what are you doing?

We have three reports to submit, but you didn't submit them.

I'll do it tomorrow. I'm busy today.

Tomorrow? Where are you going?

Hey, stop.

Hey, what's wrong with him?

He used to stay only in his office and autopsy room. Where is he going?

I don't know how to put it.

To become a snake?

What? Become a snake?

Don't even try to understand.

He's going beyond the human boundary.

Sure, go ahead and become a snake, eating grass and bugs.

-Aren't you coming? -I'll get going.

Hey, what about the reports?

You have to submit them today!

Mr. Gal, this is a file from Mr. Do.

-From Mr. Do? -Yes.

BUSINESS TRIP TO BEOLGYO

-Call him. -Okay.

Business trip? Why do you need to go to Beolgyo?

To track down Park Yeong-su's killer.

Do you have time to go on a business trip?

Don't go anywhere. Keep a low profile.

Why?

-Because it's Beolgyo? -What?

You were at Beolgyo Office before coming here this February.

Doctor K came to Seoul in February too.

-What are you talking about? -Hanju Hospital's Jang Cheol.

You two are close.

Gee. I have no idea what you're talking about.

Sure.

That's why I'm going there myself. Got it?

Stop right there.

Mr. Do, as of now,

you can't command any investigation.

Filing warrants, outside work, and investigation.

Everything stops.

-It's an order as the head prosecutor. -What if I insist?

If you leave now, you're going AWOL.

That calls for disciplinary action, you know?

Is that what you're after? Getting rid of me?

You crossed the line first.

Exactly.

Stay quiet behind the line.

No.

To confront the guy who crossed the line, I should do the same.

How about Ms. Eun,

who will be accused of the GHB case while you're doing this?

Since NFS couldn't detect GHB,

we became the idiots fooled by a gold digger.

That happened when you left Ms. Eun alone.

Did you even care?

What if it hurts your people again?

Mr. Do!

I disapproved of your business trip.

If you leave the building, you're leaving the place of your duty.

You can't stop me now.

It's an order from your head prosecutor!

I have no reason to follow that order!

Mr. Do!

Mr. Do, did you get the approval?

-I'll drive. -No.

-I'm going alone. -What?

From now, I'm acting independently, disobeying Mr. Gal's order.

Leaving my place of duty or violating my duty.

Either one is an offense to Act on Discipline of Prosecutors.

What are you talking about?

You don't need to take the risk.

-I'll go alone. -Gee.

-Nonsense. Let-- -Mr. Yang.

Soo-dong.

Listen to me.

I'll take the burden alone.

Help me to do so.

Gee.

But…

This can't be happening.

It has to be a wild snake. Is it?

We only have wild snakes.

We catch so many snakes these days.

A viper snake is hard to get.

I want a short-tailed viper snake.

Short-tailed viper snake? Let's see.

Here it is!

We want fresh venom.

I can't do it alone.

Hold the tube.

Hurry.

-What are you waiting for? -No, I'm scared of snakes.

You do it. You wanted to be the snake.

I have anti-venom. You won't die. Hold it.

No.

-You do it. -What are you doing?

Hold the tube already!

-Goodbye. -Bye.

Let's go.

Sir, how much is this snake wine?

You want a glass?

It's great for stamina.

Doctor, are you going to buy snake wine?

It's no good.

What kind of life did he have?

Mom!

Mom, there's someone here!

Mom, there's a bug here!

Mom!

Let me out!

Please let me out!

Mom!

Mother!

Mother, I got into med school.

You still have a long way to go to catch up with your dad.

Yes.

Yes, Mother.

NATIONAL FORENSIC SERVICE

Gosh. It's nothing again.

Dr. Ma!

An Ji-hye's third blood test didn't have GHB again!

Nothing again?

This is driving me nuts.

Sally, let's try it one last time.

Stop wasting the sample.

We only got the amount for one more test.

This darn GHB.

-Where are you going? -To get some fresh air.

Sally.

-Do you know how to cultivate bacteria? -I did it in school. Why?

I have to make a bacteria culture medium, so wrap that up and come.

The GHB put a hole in my soul,

so I'm filling it up with ramyeon.

Still on GHB?

-Where did you get stuck? -I guess LC/MS can't target it.

The metabolite must be hiding somewhere.

Is the molecular value too small?

How can LC/MS detect the single exposure of GHB?

You used the wrong method.

Don't you trust…

Right. It was the wrong method.

Which method should I use?

I'll give up the molecules because they are so small--

You should run a test higher in sensitivity and selectivity than LC/MS.

There isn't a test like that.

There is. The one much smaller than molecules.

I should look into that first.

Come on. What are you doing here when we're busy?

How can you eat ramyeon now?

Dr. Ma, I found a way.

You did? What is it?

Atoms! Isotope Ratio Mass Spectrometry. IR/MS!

Sally, NFS doesn't have an IR/MS system.

-I know where it is. -You good?

Hurry. I don't have time.

-Life is give-and-take. -Sally!

Where is it?

Those pricks.

Label it.

PARK YEONG-SU DEADLY VENOM

Apply the next bacteria.

My bacteria, grow well.

You're something too.

What did you say?

Go and work.

Where did you learn how to drive?

Did you bring the official request to use the IR/MS system?

Of course.

Did you bring blood and urine samples?

KFDA

KFDA has the equipment NFS doesn't have?

Yes. Every substance has an isotope fingerprint.

IR/MS uses that to verify food's authenticity,

its origin, and product descriptions.

Food authenticity?

KFDA requested it.

Fake honey is in the market, so they want to identify it.

That real honey verification?

She's in the greenroom.

Bring her here once the makeup is done.

NEWS FOCUS

PROSECUTOR GAL DAE-CHEOL

The live broadcasting will start soon.

Ms. An, come this way.

Five minutes until we go on-air. Standby.

The victim of Kang Jun-seo's drug-infused rape case

is here with me.

Thanks for making a tough decision to come here.

Will you tell us?

What happened in the hotel room that day?

I…

Did you get it?

This is the result when we run the blood with LC/MS.

As you can see, nothing special.

Here's the result of IR/MS.

You got excited and spoke in English again.

Speak in Korean.

This is the metabolite of GHB.

It's the isotope fingerprint that never gets erased.

We have decisive evidence that GHB was in her body.

Then we found GHB in her body!

Yes. It's clearly in it.

With this, we can arrest Kang Jun-seo without a warrant.

We'll get going. Thank you.

Ms. An, it's okay.

Please feel free to talk.

I didn't get raped by Kang Jun-seo.

I've never had GHB.

I've never had a memory blackout.

Not at all.

Did you hear that?

Mr. Cha, keep asking her questions. Get the details.

Yes, Ms. Cheon.

You have to turn on the news!

-News? -News?

Okay.

Were all your testimonies lies?

KANG JUN-SEO CASE'S VICTIM CHANGED HER STATEMENT

All charges I had against Kang Jun-seo…

I'll drop them all.

What is she talking about?

What on earth is going on?

What is this?

"I'm sorry."

What?

It's smudged to the right.

That means he's a left-hander.

I should have treated you with something better.

No.

Dr. Jang. Are you a lefty?

Yes.

Goodness.

Dr. Baek, wake up!

Still sleeping?

-What time is it? -It's after ten.

I told you to wake me up at 10:15.

-I'm late. -Late for what?

Can't you tell right away?

-They are different. -What's different?

These are different.

Why the venom from the same short-tailed viper snake differ?

The snake venom is not always the same.

Doctor. There's something you should see.

What?

Come this way.

It's been so long since someone came here.

I'll take a look.

Whatever you want.

Yes, Dr. Baek.

Hello?

-Mr. Do. -Yes, Dr. Baek.

We found a possibility that Park Yeong-su was murdered.

I knew it.

I have something to tell you about Jang Cheol.

Jang Cheol has

a different personality inside him.

So be careful.

Hello?

You there, Mr. Do?

It's been a while.

Baek Beom.

We've never met.

You killed Yeong-su.

I can't fake it as a natural death. Baek Beom will know.

Then we'll execute the search and seizure warrant now.

This is a violation of human rights.

If you have nothing to hide, get tested.

Either Ji-han or I have to get knocked down to put an end to this.

We'll begin the Disciplinary Committee against Prosecutor Do Ji-han.

Please wait!

Why investigate the case when it's closed as an accidental death?

What if it wasn't an accidental death?

Your theories don't add up.

What are you doing?

Bite!

Subtitle translation by Yoon Hye-won