Sergeant Kim.
Give me the gun.
I'll give my statement as your witness to the prosecutor in charge.
The judges will understand your situation.
But they'll still put me behind bars.
Your sentence can be mitigated.
I'll help you so that your sentence...
can be minimized.
I can't go to jail.
There's something I have to do.
Something you have to do? What do you mean?
But now, I'll give you a reason to live.
What is that?
Why...
should I stay alive?
What's the reason?
To make sure that no one else goes through what you experienced.
To make sure no one else breaks down...
because of despair that comes unannounced.
Cases are closed when perpetrators are caught,
but the sorrow of those who lost their loved ones...
never ends.
You must know that better than anybody else does.
In order to prevent such sorrow and innocent victims,
you must figure out who will commit crimes in the future...
and get rid of them in advance.
That is your duty...
and the reason you must keep on living.
Let me ask you again.
If you can find out about a future crime in advance,
will you be able to kill the person who will commit the crime...
to make sure it never happens?
Do you trust me?
That man told me...
that I'd have to make a difficult choice.
And I've already made my choice.
A choice? What are you talking about?
I'm sorry, Prosecutor Min.
You'll have to make a difficult choice today.
When I first met you,
I told you that you'd have to kill a person.
What you truly want.
That's what I'll give you.
I have a condition first.
You must kill a person.
I won't lie to make it easy for you.
For the first and last time in your life,
you'll have to kill an innocent person today.
But I can promise you this.
If you decide to dirty your hands with that one death,
and if you're ready to carry the burden...
of self-reproach and guilt for the rest of your life,
you'll save dozens...
No, you'll save hundreds of lives.
(Episode 3)
It rained a lot,
so most evidence or traces must've been washed away.
Yes, there's hardly any left.
But to tell you the truth, I don't think we need a lot of evidence.
The abductor must've strangled her and killed her...
before he was shot to death.
That's obviously what happened.
Just a moment, please.
Continue along.
Your wife must be in a good place now.
Thank you.
I know that you need more time to pull yourself together,
but there's something you have to do.
Jung Il Soo.
If he's alive,
Soo Young won't be able to rest in peace.
I'll get to the job...
after I get rid of him first.
I'll help you so that you can kill him in the near future.
Nam Sun Woo. Your next target.
Based on clinical trials over the past two years,
more than 80 percent...
What crime did he commit?
I mean, what crime will he...
commit?
This is the only thing I can say.
If you kill him,
dozens, no, hundreds of lives will be saved.
Children do not belong in a hospital.
Cadinox, the pediatric heart medicine that we invented...
will be a drug that will permit children across the world...
to run around without being sick.
I heard some participants of the clinical trials...
had terrible side effects.
Could you please tell me about that?
It is not true at all.
All new drugs are faced with malicious fake rumors.
You should know that.
They are malicious fake rumors.
Okay. We'll look into it ourselves.
Thank you for making time in your busy schedule.
Thank you. Also...
I should buy lunch, but I couldn't make the time,
so I prepared a small gift instead.
Thank you for the thought, but I can't accept this.
With the new laws on bribery,
we have to be extra careful.
Is that right?
You are an honest man, just as I heard.
I've been deeply moved.
The weasels who write articles like ads are the strange ones.
And these earrings are too fancy.
They aren't my wife's style.
I didn't get these for your wife.
- Pardon? - She went to your college, right?
Yoon Shin Hye. The intern.
It's nice to see how hard you work to help your junior alum.
But I guess people study in hotel rooms now.
Thank you.
I look forward to reading your article.
Hello?
Is that right?
Bring him there.
I submitted Min Ji Soo's autopsy report to the precinct.
The cause of death was suffocation due to strangulation.
I saw the autopsy report.
Then why...
Did you really find gunpowder on her hand?
Is that true?
Yes. She did fire the gun.
The autopsy report says there was a chemical on...
her right index and middle fingers.
It was paint thinner.
Paint thinner? Why did she have paint thinner on her fingers?
That's for the detectives to figure out.
It's so strange.
You asked the same exact questions.
Pardon?
Someone came earlier and asked the same questions.
Who was that?
My child was always exhausted.
And dizzy.
Anyway, my child is dead now.
What use is all of this?
I'm sorry to say this,
but we need to gather all the evidence we can...
for other people who are sick.
Were there any other symptoms?
Before your child died of congestive heart failure, that is.
(Cadinox Stage 4 Clinical Trial)
(Yoo Jae Min, Age 5, Hypertrophic cardiomyopathy)
(Cause of death: Acute heart failure)
His fingernails and toenails were lifted off the nail beds.
- Like a spoon? - Yes.
He had sores around his lips...
and inside of his mouth too.
Is there a problem or something?
No. This was very helpful.
Thank you.
Dr. Oh.
Mr. Nam would like to see you.
What are we looking at? I don't see anything strange.
Look at this photo.
His shirt was rolled up a little.
Yes. This is what happens when someone...
moves the body.
And I confirmed...
that Ms. Min had paint thinner on her right hand.
Paint thinner?
It's instinctive to protect yourself.
If there was paint thinner on her hand,
that means all DNA of her assailant on her fingernails were destroyed.
That's right.
What's stranger is...
Seo Bo Yun had no nail marks on his body.
Seo Bo Yun abducted Ms. Min.
Immediately thereafter, they were both found dead at the same place.
Ms. Min was found with a gun in her hand.
They obviously killed each other.
But if you drop these preconceptions,
there are many things that don't add up here.
Hold on.
So...
there was a third person at the scene.
And that third person killed Ms. Min and Seo Bo Yun...
and staged it to look like they killed each other.
It's just a speculation.
However, if I am correct and there was a third person,
that person probably has a nail mark on his arm.
Shouldn't we alert Detective Kang about this?
He probably knows already.
He was at NFS earlier too.
I'm sure he already found out everything I did.
First, we should meet with him.
I'll go.
Si Hyun.
I think it's starting.
Where are we?
You realize this is abduction and false imprisonment.
They are crimes.
What are you doing? That's not very gentle.
So why did you do something so stupid and cause this mess?
You were the lab chief.
Did you think I didn't know you were stealing documents...
on Cadinox?
Yoo Jae Min...
died a week ago.
Yoo Jae Min?
He participated in our clinical trial.
He was day-to-day to begin with.
You can't blame the drug for his death.
That's just too much.
Jae Min was suffering from hypertrophic cardiomyopathy.
But he died...
of acute heart failure.
I'm sure you're well aware of what that means.
If the new drug gets released,
it might kill hundreds of other kids.
80 percent of the kids who participated in the clinical test...
showed signs of improvement.
So you should just...
consider Jae Min's death as collateral damage.
Collateral damage?
(Collateral damage: A term for deaths, injuries, or damage...)
(inflicted on an unintended target.)
Does it put you at ease to think of the children's deaths...
as collateral damage?
You don't seem to get the message.
By the way, how are your wife and daughter doing...
in the US?
They're in LA, right?
People say the US is a developed country.
But it's actually a very dangerous place.
There are so many gun accidents.
If you ever do anything to my family...
What? What will you do?
What can you do to me?
Tell me.
Mr. Park.
Book a ticket for tomorrow morning.
- I want you to go to LA. - Yes, sir.
No, please don't harm my family.
I'll get rid of all the documents I gathered for the press release.
And I'll even give up my position as the team manager.
No, no.
I'll just leave the company.
Please trust me.
Dr. Oh.
The person I can trust the most...
is someone who's dead.
Why?
Because they're dead quiet.
Are you saying you're going to shut me up by killing me?
You're going through a lot these days, aren't you?
All your family's abroad.
I'm sure you're lonely when you go home.
I heard a lot of guys who live apart from their families...
commit suicide due to loneliness.
And come to think of it,
you're living apart from your family as well.
You'll have to decide...
before Mr. Park boards the plane tomorrow.
Okay?
(Seoul Joongki Police Station)
Dong Soo, I'm...
I know what you're going to say.
So don't bother.
It'll be hard for you to say it.
And it'll be hard for me to listen.
It's my letter of resignation. Please give it to the chief.
Dong Soo.
I...
I can't even dare to imagine how devastated you are right now.
But...
you don't need to do this.
Can't you just take a few months off and clear your head...
What I'm about to do from now on...
isn't something I can do as a cop.
Dong Soo, what are you saying?
- What are you going to do? - Gyung Tae.
Please do me a favor.
Dong Soo...
That guy in the sketch...
Isn't he Detective Kang?
That guy lying down has a scar on his arm.
And that guy...
might actually be the one who killed Prosecutor Min.
This guy in the sketch is definitely dead...
based on the amount of blood he's shed.
Detective Kang will kill that guy.
You're always drawing butterflies.
You know I love butterflies.
Thanks.
This might not catch your attention,
but that woman in the sketch...
is a rookie actress who's recently become really popular.
So are you saying she has something to do with this case?
That would make things so much easier.
But no.
It's just an advertisement she recently shot.
And the advertisement can be seen from the window of the crime scene.
It's an outdoor billboard.
So is that sketch showing us where it's going to happen?
But the problem is, there are hundreds of offices...
with that outdoor billboard outside.
So finding that place...
will be impossible.
Let's focus on the first sketch.
We first need to find the guy who's trying to...
hang himself.
I'm sure it's related to Detective Kang's crime scene.
The clock in the sketch says it's 7:40pm.
We'll be lucky if it happens tomorrow or the day after.
But if it's going to happen today,
we have less than two hours left.
Honey, please forgive me for dying.
Soo Jin.
I'm really sorry.
What happened?
I think I got something.
Do you see the painting in the living room?
I looked it up, and it's an art piece called...
"Butterfly and Tea".
It was painted by a famous artist named Choi Yu Na.
And it was put up for auction three months ago.
(February, 2018)
According to the record, this painting was taken by...
a pharmaceutical company named Sunwoo Medical.
It was delivered to 102-905, Siyoungin Apartment,
Yeongdeungpo-gu, Seoul.
Brain death occurs five minutes...
after oxygen supply to the brain is cut off.
The time shown on the sketch is 45 minutes past the hour,
which means that's our deadline to save that person's life.
Darn it.
It's the police. Dr. Oh Jin Woo!
Dr. Oh Jin Woo!
Who are you?
I'm...
What brings a police officer here?
We received a crime report.
A crime report?
Yes, it must've been a prank call though.
I see.
I guess you were doing some repairs.
- Pardon me? - This.
Oh, yes. I was trying to fix something.
What's this?
Please leave. I'm quite tired.
I can help you. If you tell me what it's about...
Please. I plead you.
Please leave.
Okay, then.
Si Hyun.
That guy in a hoodie...
Yes, he's probably the man in the sketch.
This man was captured on the security camera footage...
right before Dr. Oh tried to hang himself.
So Dr. Oh gave up on taking his own life...
right after meeting this man.
What would be the reason?
Is something bothering you?
I feel like we might be missing what's really important.
What's really important? Like what?
From who this man is...
to his relationship with Dr. Oh...
and how this is connected to Prosecutor Min,
we don't know anything for certain at the moment.
So?
There's only one thing I'm sure of.
If this man in this footage is the one who killed Prosecutor Min,
Detective Kang will kill this guy.
We must stop Detective Kang.
Mr. Kim Do Jin.
About what happened to Prosecutor Min...
I'm sorry for your loss.
Why did you come to see me?
I'd like to ask you questions about the case Ji Soo was working on.
Then I won't be of much help.
She called and said that she wanted to delay the meeting a bit,
and the call suddenly got disconnected.
I'm already aware of that.
Would anyone related to the cases she was working on...
be holding a grudge against her?
I'm not sure. As you're probably aware,
so many people partook in the defense corruption...
involving the military, which she was investigating.
It's hard to name just one person.
Who or which organization...
would benefit the most from her death?
I'm...
just one of the witnesses.
I don't even know how deep she dug,
so I can't really give you any names.
I see.
I'm sorry I can't be much of help.
This is my number.
Please call me if anything comes to mind.
Please help me.
Goodbye.
You're a prosecutor. Even if you can't be rich,
you should eat properly at all times.
You always eat convenience store food.
Gosh. Goodness.
Gosh. You are so sloppy.
I was saving that for later.
Take it back. Take it back, then.
Mr. Kang Dong Soo?
We're from a police investigation unit.
Please come with us.
How did it go?
Nam Sun Woo is always with two bodyguards.
We'll have to get rid of those bodyguards first.
So what's your plan?
This painter, Choi Yu Na. Her studio is just outside the city.
Jerks like him always succumb to their desires.
Get rid of him as soon as you can.
What is it? Is something bothering you?
Earlier today,
Prosecutor Min's fiance, Detective Kang Dong Soo, came to see me.
And?
It didn't seem like he was suspecting me.
Then what?
If seeing him caused you distress, it's only natural.
No, anyone who has a heart would feel that way.
If you lose that feeling, what we're doing is meaningless.
I won't tell you...
to ignore his misery.
(Detective Kang Dong Soo)
There's only one way to wash Min Ji Soo's blood off your hands.
Save people.
That's the only thing you can do.
What are you trying to do here?
Someone reported you regarding a case being investigated.
Who reported me?
I can't tell you the details yet.
Stand by in the station.
Since you were reported, we have to investigate regardless.
Are you playing with me right now?
Just wait three days.
- Three days? - That's right.
After three days, everything will go back to where they belong.
Three days is the deadline for Corporal Yoo's sketches.
This doesn't sound like a coincidence.
Is my being here related to Corporal Yoo's sketches?
See you in three days.
Yes, sir.
Are the sketches...
related to Ji Soo's real killer?
Captain Moon!
What is it?
Let me use the bathroom.
There's one by the holding cells.
I can't use the bathroom...
surrounded by all sorts of criminals.
Be nice to a fellow civil servant, will you?
- Why you little... - Forget it.
We can make a pit stop.
This is really solid.
Speed it up.
But aren't you curious?
About what?
What would happen if you throw a person against that wall.
What are you...
What's going on in here?
Detective Kang escaped.
- What? - I didn't put out an APB on him,
since things will get out of hand.
Then what?
Go to Detective Kang's home.
I'll see if I can round up some people unofficially.
Yes, Captain.
The top star that you see out the window.
This is a billboard.
(Your special love who is out there somewhere)
(Your love who is your perfect match)
(Victim Min Ji Soo's corpse)
(DNA destroyed. Killer probably has a scratch mark on his arm.)
(Killer probably has a scratch mark on his arm.)
Detective.
How long were you planning to hide this?
Please leave this one to us.
If you kill him, you'll become a murderer.
Your life will be over.
Before I met Ji Soo,
being alone...
wasn't so painful to me,
since I had been alone my entire life.
But...
ever since I met her,
the thought of being alone...
seemed daunting and terrified me.
And now,
Ji Soo is gone.
Detective Kang.
You said my life would be over if I killed him?
You're wrong.
The moment Ji Soo died,
my life...
already ended.
Move, and I'll shoot.
You said your sketches have never been wrong.
Please, Detective.
You're right.
Your sketches will not be wrong.
I will...
kill him.
Shoot if you want.
How was that? That stung, right?
That's enough.
It's not cute anymore.
No.
We should see this to the end.
You'll really get hurt.
Whatever. Like you ever cared about other people.
What a joke.
Wait a little. I'll let you rest soon.
I can't let you go.
- Let's stop now. - We've only just begun.
Give it up.
Looking for this?
Darn it.
Give me the key.
Just shoot me.
You won't miss from this range.
You don't think I will?
No, I don't think you will.
No, you can't do it.
My gosh.
- What? - Detective Kang came to the office.
I think he saw all the case files...
including all my sketches.
- And... - And what?
He also took my gun.
Can you think of where Detective Kang went?
He probably went to Doctor Oh's place.
Thank you.
Doctor Oh.
Yes, that's me. Who are you?
- Thank you. - You're welcome.
Sir, the CCTV footage showed Detective Kang...
leaving the parking lot with Doctor Oh.
He's taking things way too far.
Who are you?
What did you talk about with this man?
Well, we didn't talk about anything special.
I'll promise you something.
You'll end up telling me everything you know.
You can tell me now,
or you can tell me after you break a few bones.
I don't care which one you choose. What about you?
Who are you?
Cadinox.
After the new drug gets released, 347 kids will die in 10 years.
But no one will be able to associate their deaths with Cadinox.
And until a new drug gets released, 37 kids...
will end up dying additionally.
I don't know what you heard from whom,
but Cadinox is a safe drug.
We couldn't find any problems during the clinical test.
If Cadinox is really safe,
why are you trying to commit suicide?
You'll be able to become rich and famous once it gets released.
But why are you here...
trying to hang yourself?
We spent two years doing a clinical test for Cadinox.
More than 80 percent of the kids who took the drug...
showed signs of improvement.
However, ever since a few months ago,
some of the kids who had participated in the test...
started showing critical signs of organ failure.
And there were some kids who even ended up dying.
So you're just going to kill yourself?
If you disappear from this world,
do you think your responsibility will disappear altogether?
Who's going to take responsibility of the pain of all the other...
remaining kids?
CEO Nam...
is a scary man.
There's nothing I can do.
On top of that, he threatened to harm my family.
You can put your will away.
Nam Sun Woo will die soon.
When he does, you can tell the world about Cadinox.
That's your job.
Who are you?
What did he look like?
It was dark, and he was wearing a hoodie, so I can't really say.
He said that your CEO...
is going to die soon?
(Sunwoo Medical)
(I bought a perfume. That's the only thing I'll be wearing to sleep.)
(I miss you.)
- You guys can leave for today. - Yes, sir.
I'll go to Doctor Oh's house.
Lieutenant Oh, please focus on finding the structure in the sketch.
What could this be? What could it be?
Did you find anything new?
This structure in the sketch is the only hint I have.
But I really can't tell what it is.
It's Si Hyun.
Hey, Si Hyun. I'm sorry.
I haven't found anything useful.
You know that structure in my sketch?
Could it be Dongjak Bridge?
Dongjak Bridge?
It could be seen differently according to the angle.
Just a second.
It is Dongjak Bridge.
It was a sketch of Dongjak Bridge seen from a construction site.
Can you find the location of the construction site?
Just a second.
I'll try to find the nearest construction site.
Good job.
- Yes. - How is it going?
Nam Sun Woo just got here.
Listen carefully to what I have to say.
The man in the sketch...
is trying to kill Nam Sun Woo.
Nam Sun Woo? Who's that?
He's the CEO of a pharmaceutical company called Sunwoo Medical,
and he's trying to launch a new drug with a fatal defect.
I don't know how that man found out about this new drug,
but apparently, he seemed genuinely intent on killing Nam Sun Woo.
What about Detective Kang?
He's probably circling around Mr. Nam now.
I guess he's planning to catch the guy in the sketch...
when he shows up to kill Nam Sun Woo.
But here's what I don't understand.
If that guy really killed Seo Bo Yun and Prosecutor Min...
It hasn't even been two days since the murder.
And Nam Sun Woo has nothing to do with the two previous victims.
It's definitely not following the common patterns of serial murders.
We don't have time to think about that right now.
Let's stop Detective Kang first.
Lieutenant Oh.
Can you track down the current location of Nam Sun Woo's car?
I just traced his car using GPS.
The current location is showing up as 1143 Yangpyeong-ri.
It's a country house owned by...
Choi Yu Na.
- Choi Yu Na? Isn't she... - Yes.
There was her painting in Dr. Oh's living room.
From all the clues,
it seems like that man, Nam Sun Woo, is like her sugar daddy.
I'm here. Aren't you going to say hi?
Young lady.
I'm going to get mad at you.
Who are you?
That's not important.
What's important is the sins you've committed...
and you will commit in the future.
What's this nonsense about?
Don't be so cryptic.
Cadinox.
What about Cadinox?
You used a substance that hasn't been proven to be safe,
manipulated data from the clinical trials,
and deliberately didn't report any adverse reactions to the drug.
Shall I keep going?
Well...
What is it that you want? Tell me.
Is it money?
I can have up to a million dollars in cash ready in an hour.
If you let me go...
A million dollars for that worthless life of yours?
Then...
how much will you pay to compensate for the lives of all the children...
whom the drug will kill?
Look.
I have no idea what you're talking about right now.
Cadinox is safe.
I'm neither a cop...
nor a prosecutor.
So I need no evidence or testimony to decide whether I should kill you.
You will...
die here today.
Roll up your left sleeve.
Don't make me repeat myself.
Roll it up.
Was it you?
Did you...
kill Ji Soo?
Kim Do Jin.
Detective Kang Dong Soo.
It's unfortunate that we met like this.
- Why did you kill her? - Before I answer that,
may I take care of this man first?
If I don't, hundreds of kids will lose their lives.
Don't kid yourself.
You brutally murdered Ji Soo,
and you want to save kids' lives now?
In this world, there are things that can't be explained logically...
even though you won't understand what this is about.
Stop spewing nonsense and answer my question!
Why did you kill Ji Soo?
Tell me,
or I'll kill you.
We all die in the end.
Death itself isn't important.
What matters is how you live your life until that point.
Right, I won't be okay with you dying so easily.
(Sketch)
Kim Do Jin and Kang Dong Soo.
It's quite complicated, isn't it?
So he believes that he's doing something very honorable.
Let's get rid of Nam Sun Woo and that guy at the same time.
Aren't you curious?
Who will win when two men with nothing to lose...
go up against each other?
Long time no see.
Don't try to protect him.
You may get hurt as well.
We need to put out an APB on Detective Kang Dong Soo.
He's the one who brought this upon himself.
Si Hyun's sketch...
This day is finally here.
It's nice to meet you.
Who are you?