(All characters, places, organizations, cases,)
(and surroundings in this drama are fictitious.)
(The scene was filmed while tending...)
(the mental state of the child actor in this episode.)
(We promise to follow up with counseling and needed treatments.)
Name someone you want to kill.
(Previously)
- Dong Sik! - What?
Su Young joined the RIU.
Is it true?
Hey. What are you doing here?
This place is on a whole different scale.
Where is RIU Team One's office?
- We can't do that. - Why not?
Is there anything you want to achieve?
It was the same since I was a kid. I want to live an ordinary life.
Tell us more about what kind of a child he was.
I've never seen one quite as odd as he.
He had his ways of making people gather around him.
Yo Han.
They were always in three.
Father, don't bully Gyeong Su and Yo Han like that.
- What? - I did it.
Yo Han was Luciel, Gyeong Su was Gabriel,
and Jeong Hwan was Michael.
The three of us...
are one.
It's so strange, Mr. Bang.
I get a feeling it's not a suicide.
You know Mr. Bang's dead, don't you?
Of course I do. I saw it myself.
I need a statement from the first officer on the scene.
I requested a transfer.
Dong Sik.
Su Young.
I'll guide you to the place where you can meet The Guy.
"If you're forced to expose me,"
"If you're forced to expose me..."
"you will protect me, right?"
"Even if it means risking your lives..."
Oh Hyun Jae.
You're next.
Are you going to meet someone?
- Pardon? - Boyfriend?
I tracked I Su's phone.
She's near Junggeon Three-way Intersection.
Stay calm, Hyun Jae.
She'll be okay.
Five years ago, at Junggeon Three-way Intersection,
there's a secret they want to hide.
They are...
the same handcuffs Hyun Jae gave to him five years ago.
But The Guy...
He was able to remove the handcuffs Hyun Jae gave him.
He had the key for the handcuffs that were distributed that year.
(Hwang Ha Young, Oh Hyun Jae)
The Guy...
is a cop.
You find me.
I'll tell you...
who told me...
to kill I Su.
(Episode 13: Random)
(When a case or pattern is unpredictable)
Team Leader Hwang.
Don't die just yet.
You're the hand with which I'll torture Oh Hyun Jae.
You did well.
Team Leader Hwang.
Are you all right?
Tae Sung. Ji Min. You're in charge of the scene.
- Okay. - Are you all right?
- Is she okay? - I think there was an accident.
- Goodness. - Let's be careful.
What happened?
I caught Gyeong Su when he was running away.
I got into an accident when I was taking him in.
Ha Young.
Okay.
I know you were behind this.
I almost had him.
But I blew it.
No.
Catching him was impossible from the get-go.
All he did was cut off his tail.
Wrong question, Detective Oh.
The three of us are one.
Name someone you want to kill.
The memory of his first murder.
This is a souvenir of that memory.
Oh Hyun Jae.
Do you think you know me?
Shin Gyeong Su killed Lee Bo Kwang and took his place.
You'll have taught him that.
You'll have looked into Shin Gyeong Su.
So this is how it feels...
to be strangled.
He has induced psychosis.
You must know about us three too.
The incident at the orphanage.
The three kids who witnessed it.
Who pushed him?
Who pushed Daniel?
I did it.
Yo Han, you tell me.
Father, don't bully Gyeong Su and Yo Han like that.
That's nonsense.
You three were the attackers.
Next.
(20 years before)
Next.
Next!
Next.
Hey, kid.
Pick it up.
You won't pick it up?
You jerk. Pick it up.
Pick it up!
Hey.
What's this?
What are you looking at?
Hey. Get out of the way.
What jerks.
What?
You pathetic things.
What are you doing?
The thrill of you three killing together.
You'll have shared the thrill and excitement...
with the other two fools.
The thrill and excitement...
will have slowly bonded you together.
What are you doing?
Those fools...
would've believed it even as they died.
Not knowing they were deceived.
Even if we're cut apart,
we have one soul.
You just cut off your tail.
You don't care.
You feel nothing.
Like me right now.
I see your shape.
But do you think you can...
find out about me?
Wait.
We'll meet very soon.
Oh Hyun Jae.
You can never figure me out.
(Tell Me What You Saw)
(Memorial Hall)
(Late Lee Ji Seon April 5, 1992 - December 1, 2015)
He said he'd let me live. I'm sorry.
No!
You said...
No!
Goodbye.
The body of the 10th victim...
of The Guy, the peppermint candy killer was found.
Ms. Lee is assumed to have died on December 1.
She disappeared on November 24...
and was found after seven days.
Her autopsy result shows...
she was strangled to death.
The body was badly decomposed,
and medical examiners say it's hard to...
determine the exact time of death.
You really died on November 29.
I will catch The Guy.
The Guy... I'll kill him.
It's the details you asked for.
Thank you.
They say keep your friends close...
and your enemies closer.
Catch The Guy.
Kim Jeong Hwan...
had an abrasion from something below his right knee.
Shin Gyeong Su...
Hello.
(Evidence)
They died of the same thing.
Potassium cyanide poisoning.
They both killed themselves.
Okay.
The details will take a few days.
These two.
They died at around the same time.
Based on the time their blood was exposed to air,
they showed the same results.
One was at Junggeon Three-way Intersection.
I'll let you live because you got it right.
Well done.
I commend you.
One of you two...
was definitely with The Guy.
- Team Leader Hwang? - Yes?
(Analysis Lab)
Ji Min. Do you remember what I said?
You should do what you want to do.
From now on, as a detective,
you need to take on the cases that feel right to you.
Yes.
I will catch The Guy.
To do that, I need you.
What shall I do?
Find out about Kim Jeong Hwan, the priest.
Check where he went, going back from the day he died.
Okay.
Oh Hyun Jae!
How long has it been?
These two guys. Five years ago, they worked for The Guy.
What?
How many more corpses...
will come through the National Forensic Service?
Like five years ago.
Doctor Han.
Shall I tell you an interesting story?
The Guy who died five years ago.
How is he still out and about?
That would be possible if there was a body made to look like his.
Someone in here...
turned a blind eye.
What do you want to say?
This is a list of the officers who were given handcuffs...
that were manufactured five years ago.
I'm one of them.
The Guy who undid my handcuffs to get away...
will be on the list too.
He had a key.
Then it's 1 of the 2.
He's a cop who has a key to the handcuffs,
or...
he killed a cop to take his place.
Isn't that interesting?
Now tell the rest of the story.
What I want to hear.
I checked it many times (5 years before)
and found nothing. (5 years before)
I only found Detective Oh's fingerprints.
Are these his?
Keep your ears and mouth shut.
You don't know anything.
Back then,
I found nothing but your fingerprints on it.
Senior Chief Choi deleted it from the evidence log.
(Regional Investigation Unit)
(Mucheon Metropolitan Police)
(Estimated time of death: March 10, 11pm to 12pm)
(Comments: Check suicide motive)
Okay...
(Regional Investigation Unit Team One, Kang Dong Sik)
Okay.
Now...
(Team Leader Hwang Ha Young)
Hello.
- You're here early. - Yes.
- What's this? - A small gift.
I like you.
I heard something huge went down yesterday.
Don't even mention it. Shin Gyeong Su killed himself.
A weird priest did the same nearby.
- What kind of priest kills himself? - I know.
Hello.
- What's this? - It's for you.
Hello.
Who is it?
(2nd Senior Chief Choi Hyung Pil)
What is it?
A thank-you plaque from the International Youth Association.
Put it up there.
(Thank You Plaque)
(In appreciation for your hard work...)
(Thank You Plaque)
Come in.
Kim Jeong Hwan was baptized Dominic.
He grew up in the same orphanage as Shin Gyeong Su.
I'm still checking where he went.
Shin Gyeong Su and The Guy were in touch.
What about the priest?
I need to do some more work on the connection between the three.
List up the estimated dates of The Guy's killings five years ago.
When the victim's body is found later,
the medical examiner's estimated time of death can be off.
Give and take 2 or 3 days before or after the date.
List the estimated...
location of the killings and where the victims last were.
Okay.
(The Guy, police officer)
(Father Dominic, Shin Gyeong Su, Dead)
(New message: Detective Oh Hyun Jae)
Come to the hideout. There's something to do.
Man Su. Can I go out on work?
Sure.
Where are you...
She left already.
My gosh.
We have to wrap up the Chim Sa Bong case...
and Shin Gyeong Su's death.
Let's work on Chim Sa Bong first.
Something's not right.
- What do you mean? - Since we got Chim Sa Bong,
huge cases keep landing on our desk.
She's not an ordinary woman.
Cha Su Young.
There's something you must do.
- What is it? - Chim Sa Bong.
I thought you weren't interested in Mr. Bang's death.
Chim Sa Bong's ledger...
mentioned him and Kim Sang Gil.
That means the two are connected.
Mr. Bang was killed after...
he looked into Kim Sang Gil.
How do you know that?
It's just a guess right now.
Then what do you want me to do?
Get a confession.
Interrogate Chim Sa Bong.
Cha Su Young.
There's something you must do.
What is it?
Chim Sa Bong.
I thought you weren't interested in Mr. Bang's death.
Chim Sa Bong's ledger...
mentioned him and Kim Sang Gil.
That means the two are connected.
Mr. Bang was killed after...
he looked into Kim Sang Gil.
How do you know that?
It's just a guess right now.
Then what do you want me to do?
Get a confession.
Interrogate Chim Sa Bong.
Yes, sir.
I'll have the receiver turned on.
Come and have some.
(Credit Card Transaction History)
Come and have some.
Your jjamppong is getting cold!
Why are you working so hard?
I told you that I'm not eating lunch.
I told you.
He only eats jjajangmyeon.
Only jjajangmyeon!
Why did you order jjamppong? He's not going to eat now.
- You should've told me earlier. - Hi.
Good timing.
Sit and have some jjamppong.
I'm not hungry.
Why can't you just say...
that you'll think about it?
Why do you have to be so inconsiderate?
Man Su,
I need to take Sa Bong into an interrogation.
Mr. Bang was killed after...
he looked into Kim Sang Gil.
When did Mr. Bang ask you about Sang Gil?
I think it may have been the day he died...
or the day before.
Show her the photos of Mr. Bang's murder site.
I really didn't kill Mr. Bang,
nor anyone else.
The fact that Sa Bong is...
using Mr. Bang to prove that she's innocent means...
that she knows who killed him.
We have to get her to confess.
Su Young,
say this.
Ma'am, it's a dangerous game you're playing.
Since you didn't kill him,
you're using that as a proof...
that you haven't killed...
anyone else.
But think of it carefully.
If you think about it the other way,
it makes you become the one who killed him.
All evidence is...
pinpointing towards you.
And The Guy will kill you off...
since you're the biggest evidence of all.
It wouldn't matter whether you're in jail or elsewhere.
You know the truth, don't you?
If you don't want to be charged for everything, spit it out.
He said that he heard weird sounds.
Jong Soo...
Get Jong Soo. We can get his statement now.
Someone who knows Mr. Bang,
it's either the police or someone close to the police.
What are you doing? Yeon Ja told us everything.
Don't talk nonsense and get straight to the point.
When I was killing Chun Gil,
I realized that I left my money to buy cigarettes on site,
so I went back for it in case that gets me caught.
I have updates on Mr. Bang's case.
The murderer hasn't been identified yet.
I know.
Are you saying that you've identified the murderer?
Perhaps.
Update me.
Mr. Bang has been killed...
by The Guy.
We found two important people...
in Sa Bong's ledger.
Mr. Bang Sang Sik...
and Kim Sang Gil.
We have investigated and found...
that Sang Gil is The Guy's father.
Mr. Bang was killed...
while looking into who Sang Gil is.
Mr. Bang got on The Guy's nerves.
The witness for this is Jong Soo,
who's the criminal of another case.
He saw two people...
when he went back to the site to take something he left behind.
They were the murderers.
This punk.
What a jerk.
What are you?
Seriously?
Hey.
Who are you? Who are you...
What are you doing?
Why would you threaten me for going to a loan shark?
I'm the police.
Do you want me to arrest you?
Who are you?
Why are you doing this?
You trash.
Come at me.
No.
You trash.
(Cha Su Young)
One was Dominic...
and the other was...
Kim Yo Han.
That's The Guy's real name.
But what's interesting is...
that he's...
a police officer.
Mr. Bang's case was a private one.
Who would've known about the case?
Someone who he knew...
or worked closely with.
Then...
it's one of us.
He's hiding...
amongst us,
like a rat.
(2nd Senior Chief)
This is Inspector Seo Gi Seok.
I'm Inspector Kim Joong In.
You've come all the way here to check up...
on the ridiculous rumor that The Guy is still alive.
- How long have you been here for? - This is our seventh year.
Seventh year.
How dare you seventh years...
come to a senior chief's office like this?
Kindly refrain from unnecessary comments, sir.
An insider reported that the investigations...
for the Peppermint Candy case were manipulated.
We heard that Shin Gyeong Su isn't Peppermint Candy, either.
I told you, it's a rumor.
I checked his dead body with my own eyes five years ago...
and I closed the case myself.
Next time, you must submit all files on the Peppermint Candy case...
that you've written.
What?
We'll follow up with you.
Inspectors came to my office,
investigating me for manipulating the Peppermint Candy case.
They were quick, I see.
How can you do this to someone...
who's just trying to solve a pressing issue?
Someone who's trying to solve an issue...
doesn't poke his nose into the case.
You poked your nose around it, so you sort it out.
- I'm barely getting by right now. - Sir!
You'd better take full responsibility for it...
instead of dragging me down.
Confess...
that you were the only one who manipulated the case.
You're cutting me out...
so that you can save yourself?
Admit your wrongdoings...
and resign.
That's what suits you the best.
This organization you've been trying to save,
do you think it'll save you?
I told you that I'd get rid of you.
This is your last chance.
Either cover this case up like you did five years ago...
or admit what you've done...
and resign.
What if I catch The Guy...
and kill him without anyone knowing?
That'll do, won't it?
This is bad.
How long will it take you to catch The Guy?
It's going to take a while.
You should've been on it already, I've given you enough information!
How can you be so useless?
Hyun Jae knows that The Guy is the police.
What?
Now that we've narrowed it down to the police, we'll find him quick.
And we need Ji Min on the case to get The Guy.
I'll keep him on my team.
Do whatever you want with him.
It's an end for us all if we don't catch him anyway.
(2nd Senior Chief Choi Hyung Pil)
What is it?
You know the handcuffs that had Hyun Jae's fingerprints on it?
We failed to extract the DNA information from it already.
- Stop talking about it. - Well,
it seems that we'll be able to extract the DNA information now.
You'd be surprised by how quickly science advances.
- You think you can do that? - Yes.
Make it strictly confidential.
All right. Bring the handcuffs with you.
(Mucheon Metropolitan Police, Senior Chief Choi Hyung Pil)
If killing him myself is my only way to live,
then so be it.
Su Young!
- Hey. - Hi.
What's up with things nowadays?
Why is everything so complicated?
Were you on this case all along? Is that why you've been so busy?
Yes.
Don't be so vague and tell me what's going on.
I don't understand anything.
Who's Sang Gil?
Sang Gil is the guy who killed my mom.
How did you find out about him?
Why are you interested in how I've found out about him?
That's not what I mean.
I'm just sad.
Why didn't you tell me...
that you've found the man who killed your mom?
I knew how much you wanted to find the guy,
even more so than the RIU.
So how could you not tell me?
I couldn't bring myself to.
Why not?
I keep tearing up when I try to talk about it.
So I just cried it out with my dad.
I miss her so much, but I can't do anything.
That's what drives me insane.
What do you mean?
I want to see her so badly, but I can't.
It's not like I can bring her back alive.
You really don't know how it feels like to miss someone.
You small town detective.
That's still good to hear.
- How long will it take? - It's not that easy.
It'll take around a day and a half.
Get it done in a day.
I'll try my best.
We have to check on every police and detectives...
who have worked with Mr. Bang within the last five years,
at the Hwayoung Police Station,
Ganggye Police Station, Parkdong Police Station,
Parkdong Patrol Division, and Yeowool Patrol Division.
That's around 60 people.
It'll take me around three days...
to read over work journals of 60 people.
Make it faster.
Let me check the list.
Work journals for people who've quit have been scrapped.
It'll take a while.
Why don't we just make it an open investigation?
No.
I can't trust anyone at this moment.
You really died on November 29.
Start with the police officers who took a day off...
on November 29.
November 29?
Will do.
(Doctor Han Myeong Won)
It's me.
(Thank You Plaque)
I think I can get it done within 24 hours.
Make it quick. We're running out of time.
Ha Young, come to my office.
(2nd Senior Chief Choi Hyung Pil)
Come in.
We've narrowed it down to around 60 people...
after sorting through some information.
All right. I'll take care of the rest.
Why are you hurrying all of a sudden?
I'm just sick of hearing about The Guy.
Ha Young.
- Yes? - If you catch The Guy...
Assuming it's a critical situation,
I'll use my authority and discretion.
Is that the only requirement?
Yes. You can take credit for everything else.
All right, then.
Keep it under wraps.
You can start with Hwayoung Police Station...
where Mr. Bang worked.
I'll tell you the rest in person.
Keep it under wraps.
You can start with Hwayoung Police Station...
where Mr. Bang worked.
I'll tell you the rest in person.
I need to check the DNA of the police officers on this list.
Collecting their hair samples will suffice.
Keep this on the hush.
Yes, sir. I got it.
Senior Chief Choi is onto something.
Find out what it is.
Yes, ma'am.
Start with the police officers who took a day off...
on November 29.
Team Leader Hwang is going to look into police officers...
who took a day off on the day of her abduction.
I think I can get it done within 24 hours.
Make it quick. We're running out of time.
What's Senior Chief Choi up to?
What does he need to do...
in 24 hours?
(Hwayoung Police Station)
Hello.
I'm from the Regional Investigation Unit.
Could I meet with Mr. Yoon Dae Jin?
Sir, why do you need their hair samples?
It's none of your business. We have a long list. Get in the car.
That looks like a lot of work.
- It's nothing. - Thank you.
- Bye. - Bye.
- Have a good day. - Bye.
(Hongwoon Patrol Division)
Hey, Dong Sik.
Hey, chief.
I've been working with the RIU at Mucheon Metropolitan Police.
I didn't get to visit you.
Everything is good, right?
Everything is good here.
But why did people from Mucheon Metropolitan Police take my hair?
You know why, right?
Your hair?
I see. It must be for the cold case.
I don't know about that. I have to get going now.
I'll talk to you later.
Do a good job. Don't mess up and criticized.
Okay, I will try.
I guess Senior Chief Choi found my DNA or something.
Oh Hyun Jae ought to reflect on himself.
Team Leader Hwang and Senior Chief Choi might catch me first.
This is getting interesting.
Team Leader Hwang,
Senior Inspector Do is collecting hair samples...
of 60 police officers on the list.
Hair samples?
Yes. I think he's trying to get their DNA.
But he doesn't have a control group. What's his plan?
(Control group: The subject to be used in comparison for DNA tests)
They are...
the same handcuffs Hyun Jae gave to him five years ago.
But The Guy...
He was able to remove the handcuffs Hyun Jae gave him.
The handcuffs Senior Chief Choi has.
The Guy's DNA.
60 isn't that big of a number.
He will pinpoint who it is soon.
Where's Senior Chief Choi now?
He's having a meal with officers from Mucheon Metropolitan Police.
Yes. The meal with senior officers...
from Mucheon Metropolitan Police is today.
I'll be with Deputy Park and Senior Chief Choi.
(Miseok Goshiwon)
(The Guy, police officer)
But what's interesting is...
that he's...
a police officer.
That's odd.
If I learned anything about Detective Oh,
I know that he wouldn't have shared his intel.
Why did he share it?
Then what do you want me to do?
Interrogate Chim Sa Bong.
Yes, sir.
He cleaned his gun.
To do what with the gun?
Could he be thinking...
Let's drink.
- Okay. - Okay.
By the way, why isn't Senior Chief Choi here?
He's probably on his way here.
Sir, please let me pour you a drink.
Team Leader Hwang, what is this about?
(Detective Cha Su Young)
Team Leader Hwang,
I think Detective Oh might be planning something dangerous.
- What? - Detective Oh...
cleaned his gun.
Something is off.
I think he shared his intel with the team on purpose.
Okay. I'll track his location. We'll look for him together.
(National Forensic Service)
(Analysis Lab)
(Restricted Area)
(January to March, 2020, Storage for crime scene evidence)
(Mucheon Metropolitan Police, Senior Chief Choi Hyung Pil)
Hey.
Are you here to pick up the handcuffs?
I knew you would take the intel.
Detective Oh, you were right.
Senior Chief Choi came to drop off the handcuffs.
Tell him...
that you found a fingerprint of an unidentified individual.
What is it?
You know the handcuffs that had Hyun Jae's fingerprints on it?
We failed to extract the DNA information from it already.
Well, it seems that we'll be able to extract the DNA information now.
You'd be surprised by how quickly science advances.
- You think you can do that? - Yes.
Make it strictly confidential.
All right. Bring the handcuffs with you.
The handcuffs Senior Chief Choi has.
The Guy's DNA.
60 isn't that big of a number.
He will pinpoint who it is soon.
There was no DNA on the handcuffs, to begin with.
I knew you'd plant bugs,
so I leaked false information.
- Where's Detective Oh? - They lost the signal at the NFS.
What on earth is he planning?
Take off your mask.
All right. Tell me.
Tell me who asked you to kill I Su.
(Authorized Personnel Only)
Team Leader Hwang.
What is it?
(Choi Hyung Pil)
Come with me.
You jerk.
Are you trying to show the fighting spirit of a cop?
You jerk.
I'll make sure I catch you...
Catch me?
You...
I'm going to catch you no matter what.
Make sure you catch him.
- Detective Oh. - Hyun Jae!
Call for backup now.
Man Su, please come to the NFS now.
Sir.
Sir!
Hyun Jae!
Sir.
(Tell Me What You Saw)
He was attacked when he was acting on his own.
If Hyun Jae catches The Guy...
No. Never.
I'm sure this is The Guy's doing.
Are you talking about the real culprit of Peppermint Candy?
Profiling is a process...
where you learn how the killers think by studying their decisions.
Are you telling me that you profiled me?
I think you're anxious that other people...
might catch me first.
You know what? I just want to know who asked him...
to kill I Su. That's all.