Previously onCSI: Vegas...
FOLSOM: Everything that has happened since we started
investigating Mojave Kinematic Designs is connected.
ROBY: Robert Cuevas' murder,
Cliff Roland's accident,
and Valerie Hammond's abduction--
I think Valerie knew more about that murder than she let on.
What's the DNA telling us?ROBY: That it's not hers.
FINADO: It would have to be synthetic DNA.
We have people encrypting DNA now?
Whoa, what's going on?
That's malware.ROBY: Shut it down!
All our case files are being deleted.
We just got hacked.
WILLOWS: Truman Thomas is behind this whole mess.
ROBY: He got the ball rolling.
And me and you are gonna pay him a visit.
FOLSOM: Truman's tellurium operation
is a subterranean lab.I'll take this hall.
PARK: Maybe that's where he and his
robot buddies are cooking up their little
double-helix stink bombs.
[explosions in distance]
Get behind me.
ROBY: Cover your mouth![Park wheezing]
Chris? Chris, hold on.
[gun cocks]MAN: Drop it, Dr. Roby.
WILLOWS: You've reached Catherine Willows.
Please leave a message.
[beeps]
ROBY: He's six foot, gray suit!
He's got a Beretta! Tell Joshua...
ROBY: Oh, God.
[grunting]
[gasps]
MAN: Let's go!
Move, move, move, move, move!
[gasps]
Chris! Max!
Chris!
Oh, my God. No, please, please, please, please, ple...
Please, please...
Oh, thank God.
[line ringing]
DISPATCH: LVPD.
This is Catherine Willows.
I need immediate medical assistance.
A CSI is down.
[whirring]Earthlore mine, basement level.
Chris...
Basement level. He's unresponsive.
Allie, what happened?I'm not sure.
There was some kind of explosion.
When Catherine got to Chris,
he was unconscious.What?
It's bad.
Is he gonna be all right?I don't know.
Josh, Max is missing.
Catherine said she was taken.
Did you know they were coming out here?
This is Truman Thomas' mine.
Max was this close.
Now he thinks he can just roll everything up?
GILL: Chris?
What happened to him?
What's wrong with my hand?
Oh.
FINADO: Absorption through nitrile gloves,
fasciculation of the muscles,
intense sweating and...
a faint, fruity odor.
This is a nerve agent.EMT: Nerve agent?
Like sarin gas?What?
Oh, my God!Ho, ho. Stop, stop.
Everybody stay put. We're not dealing with a gas.
If we were, we'd already be dead.
Whatever this nerve agent is-- whatever we're dealing with--
it's stable at room temp.
It-It's not in the air.
You've got mild contact exposure there.
Go get treated. You'll be fine.
Everybody else, we need to work the scene.
Here, butyl rubber gloves.
Put those on, you'll be fine.EMT: Okay.
Chris isn't fine.
FINADO: Yeah, whatever happened, he inhaled it.
He needs a hospital. Let's go.
What about Max? She might have
inhaled it, too.I know. We have to find her, fast.
I'm going with him.
Not a single camera in here.
It's unreal.
Whatever Truman was doing down here,
he didn't want a record of it.
I saw a camera upstairs, though.
Outside the foreman's...Trailer?
Yeah.Yeah, I already checked the footage.
Only people coming and going
that way are Max, Chris, you and LVPD.
I was just down that hall.
How the hell did that gray suit guy
get in without me seeing him?Gray suit?
ROBY: He's six foot, gray suit!
He's got a Beretta! Tell Joshua...
[loud bang]What? What was she gonna tell me?
Who knows? That's all there is.
Okay, so, the room where she was taken is this way?
Yes, but the question is
what was their way out?
That's just storage. There's no other door.
He couldn't have doubled back?No, I told you.
So, just, poof-- vanished?
He's not David Copperfield.
There's got to be another entrance.
Not according to building schematics.
There's nothing on Max's camera, either.
[bangs loudly]
Josh, listen...No.
Look.
Look at what?
The dust.
That doesn't make any sense.
With the door closed, the air in here
shouldn't be moving much.
So why is the dust swirling all over the place?
Fluid dynamics.
There must be an airflow
imbalancein here.
This is where the gray suit came in.
Truman had himself a secret exit.
WILLOWS: The door's been blasted.
WILLOWS: That explains the explosions I heard.
But why would Truman send people
to blow their way into his own lab?
Avoid the cameras,
throw us off the scent. It's not gonna work.
Wait, just hold it, cowboy.
That charge is live.
And there could be more. We just have to back off,
let LVPD ARMOR
clear the scene.Look, we don't have time to wait
for bomb squad to get here.Josh,
you're all out of strikes with IAB.
You break protocol...I don't care
about my job. If Max is down there...
What would she tell you to do?
Get ARMOR here quick.
You know what's down there, right?Yes,
the Vegas flood channels.
FOLSOM: Over 600 miles of them,
spread out under the whole city.
WILLOWS: And Max is in that deep, dark maze.
Somewhere.
[Roby exhales]
What a mess. What a mess.
You really don't unclench your jaw
once you sink your teeth in,
do you, Dr. Roby?
How do you know my name?
Oh, I know a lot more than that.
But I'll be the one
asking the questions.
Tell me...
Idiots.
I told you to use the smoke as a last resort.
Did you breathe it in?A hostage slows us down, boss.
Let me shoot her.I-- No!
It was just dermal exposure.
Your DNA...
Your DNA encryption-- it's sloppy.
Is it, now?
I seem to remember using it to hack your lab.
You asked me how I found you. That was it.
When I ran that
synthetic DNA that you left,
the malware didn't launch.
Not like it was supposed to.
And you only hacked our lab
because I got curious and opened
a damn text file.
I did half your work for you. That was my mistake.
Right after you made yours.
All right.
You're the expert.
What mistakes did we make?
I will not tell you.
Then I'm afraid
you don't have much use to me, so I...
But if you keep me alive, I will show you.
I just n...
I need a little help.
Someone with a steady hand.
No.
You can do it yourself.
Is that atropine?
Oh...[clatters]
That's all right. Here,
let me.
In ten minutes,
your symptoms will be under control.
Gentlemen, help Dr. Roby along.
It seems she'll be our guest for a little while longer.
♪ ♪
♪ Who... are you? ♪
♪ Who, who, who, who? ♪
♪ Who... are you? ♪
♪ Who, who, who, who? ♪
♪ I really wanna know ♪
♪ Who... are you? ♪
♪ Oh-oh-oh ♪ Who...♪
♪ Come on, tell me who are you, you, you ♪
♪ Are you. ♪
♪ ♪
All clear.
[indistinct radio chatter][dogs barking]
MAN: Get in there!
Hustle, hustle.
[indistinct chatter]
Okay, people, we've got cops and K9s in the tunnels,
but with no direction.
What are we looking at?
A whole lot of random missing equipment.
Think Truman started packing it up
when he realized Max was circling?
Well, synthesizing DNA isn't necessarily illegal.
Do we know what these creepy robot lab techs were brewing up?
No, butyou just
walked through a hidden escape hatch in an underground lair.
I don't think they were solving male pattern baldness.
Right, then. Working theory,
Truman's people were using the tunnels
to move out their equipment before we could get here.
Only we beat them to it.
So then it became kill or capture.
Chris gets the worst of it,
they take a hostage.
FOLSOM: These tunnels run under the whole city,
hundreds of exits. Max could be anywhere out there.
Yeah, but everything we need to find her is in here.
Let's focus on that.
So the people we're looking for
used plastic explosives and a nerve agent.
Those are not over-the-counter weapons.
Composition of the materials
could lead to where it came from.
That's where I would start. I-I did sample
the explosive residue, but what I really want to look at
is that last charge
that didn't go off.No, no, no,
it-it'll take too long. Look, these people left
in a big damn hurry. They'll make mistakes.
There's got to be a trail for us to follow in there.
WILLOWS:Allie,
you built teams for a reason.
That's right.
Okay, Catherine, you and Beau coordinate with ARMOR.
That undetonated charge
could contain trace that IDs whoever made it.
Penny's at the hospital with Chris.
I'll have her process him.
Hopefully she can figure out
what he was dosed with. Chavez, we need to get
in front of Truman Thomas.
I'll put out a BOLO,
go rattle some rich people.
You and me--
we're with the bloodhounds. We're going after her.
GILL: That's his third dose
of atropine and pralidoxime chloride.
Shouldn't he be waking up?
I was hoping for some improvement
by now.
We're doing all we can.
I'll check back soon.
Penny.
We came as fast as we could.[sniffles]
Sonya.Jack told me
what was going on. I'm clocking in.
I thought you still had a few more months of PT left
before you...Last year, when that was me,
you guys saved my life.
I'm not gonna stand here on the sidelines while Chris
is here and Max is missing.
You okay?
No.
No, I'm not.
The last things I said to Chris were really harsh
because he said
our engagement was fake.
Well, you know that it's not.
And I'm sure Chris knows that, too.
I just... I want to... I want to tell him I'm sorry,
but I can't, and I can't do anything.
Come here.
[crying]
SONYA: That's not true.
You can do your job.
[sniffles]
Um, the doctor said
the chemical was concentrated on his right hand.
He must have pushed it away from Max.
I think he saved her.
And he might be able to do it again.
GC/MS will identify the nerve agent
and give us any batch-specific impurities.
Then, if we can figure out what it was and where it came from...
You might be able to ID the people who took Max.
[Roby gasping]
ROBY:You started relocating all your gear
down here once you realized we got close?
You have everything you need?
A sterile environment would be nice.
It's the maid's day off, Dr. Roby.
You said you could improve on our methods.
Can you encode a message on DNA here or not?
You know, uh...
some sodium acetate or
nonionic detergent
would really speed things along.
Maybe your boss would be happy to get us some?
My boss?
[laughs]
And who might that be?Truman Thomas.
The man who got you all this.
You'll have to work with what you have, Dr. Roby.
So, get creative,
or...
get disposed of.
I can make my own sodium acetate.
That's the spirit.
Let me guess,
there's something else you need I don't have.
A DNA sample.
You're in luck, princess.
You brought your own.
It's a damn spiderweb down here.
[dogs barking in distance]
Every one of these tunnels looks exactly alike.
Are you sure we haven't been this way already?
I don't know.
With all these footprints,
it's hard to tell which one are ours.
Do those look fresh?
Maybe, or those might belong
to some of the unhoused folks who live down here.
Or just kids partying.
RAJAN: Hold on.
What's this?
Allie, be careful. Anything could be on that needle.
Not anything. Atropine.
Atropine is an anticholinergic.
It's used to reduce the symptoms of nerve agents.
FOLSOM: That's got to be our guys.
They crushed it underfoot, kept moving?
Maybe one of them accidentally dosed themselves.
Needed treatment.
Or Max was exposed.
Hey, if they gave Max
atropine, means they're keeping her alive.
Which way did they take her? No way to be sure.
No blood.Hey.
Can I borrow your luminol?
I just got a crazy idea.
We could use a crazy idea.
[Folsom grunts]
All right, so, as we know,
blood activates luminol, causing it to glow blue.
Okay. Atropine works by blocking
muscarinic acetylcholine receptors, right?
The ones nerve agents overstimulate.
And just like
it blocks those, it also suppresses
the electrons in activated luminol.
Kills that blue glow.
So, wherever you spray that, if it stops glowing,
it means atropine was there.
Reverse luminol. That's brilliant.
Remind me to patent it later.
Big boots.
One of Max's captors
must have stepped on this syringe.
Guys,
we found boot prints likely belonging to our perp.
Size 13. Wavy tread.
Hold on, Max. We're coming for you.
What are we looking at, partner?
My oldest daughter's favorite color,
which means the explosive used in the underground lab
contained RDX.
C-4. Mm-hmm.
It's a common explosive in the mining industry.
Still looks like Truman's our guy.
[phone chimes]Is that news from ARMOR?
Mm. Not the kind you want.
They can't disarm the charge,
and here's why.
Does that have six blasting caps?
ARMOR says there's only one trigger,
so five of those have got to be dummies.
I haven't seen a knot that tangled
since we pulled out our Christmas lights
last December. It's gonna make
opening the bomb way too dangerous.
Well, that's the point. Bomb makers know
they leave trace in their work,
so they make them impossible to open
without detonating-- covers their tracks.
Maybe the charges that did detonate
can help us disarm the one that didn't.
Small variations in bomb construction--
like placement of a live trigger--
affect the blast pattern.
All five blast patterns at the crime scene were identical,
which means the charges were made the same way.
Makes sense. They were likely made by the same people.
How does that help?Odds are,
our undetonated charge is an exact copy
of the siblings.
So, if we make six versions of the bomb,
each wired a different way,
we can use blast pattern analysis...
To figure out which trigger in our undetonated friend is live.
Find the trigger, disarm the bomb.
All that beautiful trace inside is ours.
And it might lead us to the bomb maker.
Grab your safety goggles, Willows.
Things are about to go kaboom.
["Rush" by Troye Sivan playing]
♪ Big communication, tell me what you want... ♪
Sabrina. Where's your boss?
Sorry, Detective, I'm not on the clock.
And...
I don't have him.
One of my friends
is in the hospital
and Dr. Roby's been abducted.
Time to punch in. Now, why was Truman
making synthetic DNA below his tellurium mine?
Look, I'm an executive assistant, not a scientist.
I don't know anything about synthetic DNA,
but I do know Truman wouldn't hurt anyone.
See, I think he would. I mean, just a few weeks ago, he told me
he hoped AI killed his employee,
so I doubt whatever he's hiding in that basement
is legal.
And I'd bet
he'd kill to protect it.
I believe in Truman.
In his vision of a future where the world is...
The only future I care about is the one where I find Max Roby.
And if you don't want to face obstruction of justice charges,
you should, too.
I really don't have him.
It's weird.
Truman always answers my calls.
RAJAN: [exhales] Have we lost the trail?
Josh, what if we can't find her?
I don't think I could live with myself.
Hey, hey, hey. Stay positive.
Max wouldn't want me thinking up exotic ways to hurt
the men who took her, and she wouldn't want you going
all doom and gloom.
Hey.
Well, that thing's been moved.
A lot. Wonder what it's hiding.
Whoa.
Did Truman's people stow
some kind of getaway truck down here?
Maybe.
Maybe it's just a city maintenance pickup?
I don't think so. I got blood.
Got something else.
It's Truman Thomas.
Josh, he's our only suspect.
If he doesn't have Max, who does?
I just don't get it. I mean, isn't Truman Thomas
supposed to be, like, our prime suspect?
Guess we're gonna need another one.
Got it.
Nine millimeter.
[sighs]
Off-the-shelf ammo isn't gonna help us find
the people who have Max.
It's so weird.
His renal system looks very...
Fresh?Yeah.
Just ran his blood tox.
His KLK1 levels
are way elevated for somebody his age.
Hang on, you don't...
[scoffs] You don't think that...
That a tech billionaire
got a de-aging stem cell transplant?
Yes, Jack. Yes, I do.
Well, turns out that youth does have a price tag.
If he wanted to live forever,
my guy should have worn a bulletproof vest.
I'm just worried about Max and Chris
and the way Penny left things with him.
She's just really worried, you know? And...
I just hope she gets a chance to talk to him again.
You really love her, huh?
[door opens]
[exhales]
Zoey ran the blood from the truck
that Allie and Folsom found in the tunnels.
JACK: Truman's?
Actually, most of it wasn't.
Please tell me it didn't belong...
Oh, no, no, it wasn't Max. Thank God.
It was Valerie Hammond.
She's been missing since Chavez found her apartment ransacked.
There was enough blood to safely assume that she's dead, too.
So, however Truman was involved, he ain't anymore.
Maybe an underling got sick of taking orders.
Or-or maybe
a rival tech CEO wanted the throne. Or...
Or maybe we should stop playing
"guess the motive" and follow the evidence.
Right. Perimortem bruising.
Split lip. Suggests that Truman
was roughed up before being force-fed a bullet.
You think the killer tortured him for information?
Possibly. What is that?
[sighs] No bulb. No DNA.
No, but it could have come from a man who has Max.
And that makes it one of the best leads we've got.
Breathe.
I want you to succeed.
I mean, some of this equipment is outdated.
This process requires precision, and it just...
It's a shoddy carpenter who blames her tools.
You have to make it work.
Or else
you might never see him again.
Who's him?
Aw, come now, Dr. Roby.
You have a new love.
But nobody knows that. How do you know that?
I told you, I know many things.
Even more now that I can study you up close.
Your child is grown.
Your life is your work. You love your people.
But you hold yourself back
to watch them,
to watch over them.
You have been
so lonely.
But now-- now you have
this man.
Dean.
How do you know his name?
You want to see him again, don't you?
Yes.
Get back to work.
You wouldn't want to compromise the cell lysis.
[sighs]
[indistinct chatter]
Here.
What's wrong?Whole truck's been wiped clean.
Damn it.
I thought we were on them.
RAJAN: Are we sure we're still tracking the guy
who stepped in the atropine?
Yeah, it's him.
You can tell because his right foot
is overpronated.
Ah, gait analysis.
You always were Max's best student.
All right, truck's a total bust.
Means all we got are these prints.
RAJAN:Well, they led us this far.
Maybe they'll take us all the way.
GILL: Yes, I hear what you're saying,
but what I'm ask...
Okay. Thank you.
Hey. You okay?
Oh, that was Chris' doctor.
He's still not awake,
so it's not looking good.
Penny, I'm so sorry.
You know Jack is here for you.
Yeah, and I'm here for you, too.
You know, you and I never got a chance to talk
about the engagement.
Oh, uh...Which was a surprise.
Yeah, I...
But I can really tell just...
Well, just how much Jack...[computer chimes]
Uh, what's GC/MS say?
[computer beeps]
The nerve agent's soman.
Soman gas?
What's a World War II Nazi weapon
doing in Vegas?
Oh, well, technically,
it's an aerosolized liquid, not a gas.
But that's not important right now.
Soman, soman. The vapor must have settled
by the time you got on scene, because if it had been sarin,
it still would have been airborne.And we'd all be dead.
I mean, inhaling even a few milligrams of soman
will kill a person.
I don't know how much Chris breathed in.
Okay, a nerve agent
twice as lethal as sarin--
that didn't come from a drugstore.
No. That's a highly regulated WMD.
Which means that the circle of people
who could be responsible just shrunk.
Yeah, but not enough.
Okay, I don't know if this could help.
We found this stuck on Truman's lip.
I think he bit his attacker.
There's no bulb.
I figured if anyone had a clever way to process it,
it'd be you.
Oh, man, it gets hot in this thing.
Why do you think I let you take the fun job?[chuckles]
Okay, what do we got? Let's take a look.
All right.
No match.
Well, one down, five to go.
Smells like burnt motor oil.Yeah.
Because you use oil when...
What?
Um... uh, uh, your cell phone--
let me borrow your cell phone, please.
Okay, okay, okay.I got to call Randy.
I got to ask him to run that explosive residue sample
from the crime scene to the QTOF.Randy?
He's still doing you a favor after making
maggot smoothies in his blender?
Oh, no, I told him Folsom did that.
Sonya said she gave you the hair sample
we found on Truman's lip.
This is the hair.
It's ground up, dried,
and reconstituted in solution.
So, what are you doing with it?
IDing Truman's killer,
finding Max's abductor and saving the day.
But there's no DNA there.
Oh, my little, cute morgue monkey.
Even without DNA, hair can tell us a lot
about who it belonged to.
The hydrogen and oxygen isotope ratios in our hair
directly correlate to the types of food
and quality of tap water we consume.
So, it can help you predict where a person has lived?
Down to the city.
We're gonna find these bastards.
[Willows chuckles]
FOLSOM: Hey. Now our guy's footprints
lead right to that door.
This is CSI Allie Rajan requesting backup.
Hey, she might be in there right now.
I'm not waiting.
Max!Max?
She's not here.
[sighs]
Ah, we missed her.
That's it!Yes. Yes!
Lucky number four.
We can now disarmthis dud
and process it for trace.
Randy texted me the QTOF results
for the explosive residue. We are looking at
RDX, binding agents, plasticizer...
Process oil.
Process oil?
Civilian C-4 is made with low viscosity motor oil.
Process oil is military grade.
"Sulfur ratios in the oil provided
a geographic provenance..."
It wasn't made in America.
Josh, this is in Arabic.
Until a few months ago,
Truman's killer didn't live in Vegas or even the U.S.
He's from Riyadh.
Saudi Arabia?
I sent Penny's analysis of our soman sample
to an FBI buddy.
He checked the impurities
against their database.And?
Same batch was used last year in an embassy attack
by Saudi spies.
We had it wrong from the start.
It wasn't Truman.We were never
up against artificial intelligence.
This whole mess was run by foreign intelligence.
[exhales] Where are you, Max?
[man speaking Arabic]
So Truman wasn't rolling up shop, his lab was robbed.
By someone with a taste for Saudi Arabian candy.Yeah.
And synthesizing DNA.
That's why all Truman's equipment
is here.
Look-- one up, one down.
That's Max.
They had her working here.
We just missed her.
Josh.
I should have been with her.
It would have been me instead of Chris last night.
And I asked her to take me with her!
And she said no. That's not on you.
Yes, it is. Because she still doesn't trust me.
And who could blame her?
All this guilt you have about Max,
your mom, all that happened.
You can't keep blaming yourself for everything.
Okay, I'll go to a therapist just as soon as Max is safe.
Al.
I doubt they were listening to Top of the Popson that thing.
Saudi Arabian intelligence dosed Chris with soman
and kidnapped Max.
I-I know that's where the evidence points,
but why would they care about our crime lab?
They didn't. Not until Max set her sights on Truman Thomas.
His robotics company. They were nestled in there
and didn't want to get found out.
So Truman was never behind all these deaths?
The Bureau has been warning us for years
that foreign governments are infiltrating
U.S. companies, stealing tech.
Yeah, like proprietary DNA synthesis equipment, or...
borderline sentient robots.
Robots...
that Cliff Roland helped build.
Maybe he was just
a pawn in this.
CHAVEZ: Valerie Hammond, too.
I mean, she all but admitted to being set up with him.
She was scared of somebody. I thought it was Truman.
It was the people who hired her to sleep with Cliff.
Get a little kompromat, turn him into an asset.
With Cliff, they would have eyes inside Truman's company.
Right up until an innocent mechanic
saw him tampering with Ocho.
That's why Robert Cuevas had to die.
He saw what Cliff was doing.
As soon as Max started circling,
the Saudis had to tie up their loose ends.
[yells]
WILLOWS: They killed everyone involved.
They hacked our lab....
Shut it down! ...erased every file on the case.
You realize the tech they used
was probably stolen from Truman.
They're gonna send it overseas.
Not today. I had the Feds ground
all private air traffic out of Vegas.FINADO: Good.
But look, we're-we're still nowhere.
Allie and Folsom missed Max in the tunnels.
Maybe just by minutes,
but they missed her.
FINADO: ...not understand how these guys
are always one step ahead of us.
How could they know that Max
w-was gonna go to...
[whispering]: They're spies.
Maybe they're spying on us.
So here I thought you were just really clever.
Turns out you just bugged my office.
Not to be pedantic, but I just bugged a lot of robots.
You put one in your office.
Ocho was just another one of your recruits, like Valerie?
Pity, that one.
But that's the thing with assets.
When they become a liability...
[chuckles]
Valerie was a person,
like Cliff Roland, like Robert Cuevas.
They were not assets. You killed people.
They didn't all have to die.
But you wouldn't stop digging into Truman.
I thought he was behind all this.
We all have our hang-ups, Dr. Roby.
You wanted it to be an arrogant billionaire, so
I gift wrapped him for you.
At least, I tried.
Well, as much fun as this has been...
Time for you to scurry back to Riyadh?
I would call it a triumphant return.
Truman's dream of having
AI-powered robots fix all our genetic flaws
might be pure fantasy.
But as you've seen,
his technology is very real.
You used it to hack my lab.
And to show my superiors how useful
synthetic DNA can be.
Military operations.
Forensic obfuscation.
The possibilities are...
[inhales]
...exciting.
Especially if the improvements
that you made to our malware encryption prove out.
And once they do,
what then?
I'm the last loose end?
Don't worry, Dr. Roby.
I like you.
Time to test your synthetic DNA.
See if you're all talk.
[beeping]
[whirring]
[exhales]
We can talk now?Yeah.
Are you sure you don't want to smash that thing with a hammer?
It's evidence, remember. But
the microwave transceiver's been neutralized.
I can't believe it's been staring us
in the face this whole time.
I should have tossed this bastard
into Lake Mead last month.Serena.
Evidence. Evidence. It's all evidence.
Okay.
Three, two, one.
That's it.
You know, Beau, with your expertise in materials
and my experience with explosives...
We make a dynamite duo? [chuckles]
I know why this dud was a dud.
A microwave transceiver?
How did we miss this?
CHAVEZ: We were looking for a high-tech hack.
Not some relay system from 1956.
Microwave transmission is incredibly difficult
to intercept because its frequency range is so narrow.
Air-gapping the lab didn't stop it?
Nope. But microwave relay is not magic, it has drawbacks.
It requires a line of sight.
So, what-- they were listening to us
from somewhere right out there?
By now they know all flights out of Vegas are grounded.
There's a good chance
they're laying low with their hostage somewhere safe.
GILL: I don't know how many Saudi stash houses
are dotted around this city,
but I'm thinking, I'm hoping, not many.
They could be hiding at their listening post.
Which has got to be within our line of sight here.
CHAVEZ: See, I did some digging
into local Saudi shell companies.
These guys are pouring cash into casinos, hotels,
MMA...We're right off the Strip. That could be anywhere.
FINADO: Not anywhere.
Anywhere with a pool.We figured out
why the sixth charge never went off.
GC/MS confirmed that the wiring was corroded by chlorine.
And metal and chlorine are not friends.
WILLOWS: There's no earthly reason
why chlorine would be in an explosive.
Suggests that they made it somewhere near a pool.
Looking up all rooftop pools
in line of sight of Max's office.
The Sphere's blocking that pool.
What about that one?
No, no, that office building's blocking those two.
WILLOWS: That one's got to be it.
At least it better be.
[dance music playing]
[laughing, cheering]
No genomic markers.
No scars.
This sample is flawless.
I held up my end of our deal.
You are a woman of your word, Dr. Roby.
There are some people in Riyadh who would love to meet you.
[speaking Arabic]
♪ Roll it up ♪
♪ 'Cause your grass is always greener ♪
♪ Roll it up ♪
♪ 'Cause it's always me you'll dream of... ♪
Hey. We got a problem.
Hotel owner's a piece of work,
won't lock this place down without a warrant.
Screw that.
Max is here somewhere.
My dad started Ted's career.
I'll handle him.
[dance music continues playing]
[lively crowd chatter]
♪ Tell me, lately, have you seen her? ♪
♪ Roll it up ♪
♪ ♪
♪ Hey, hey. ♪
I appreciate your ingenuity, Dr. Roby.
It's been a pleasure.[gun cocks]
Wait a minute.
Don't you want to know what I encoded in this?
Three male captors,
one with an overpronated right foot.
Dialect from central Saudi Arabia.
Oh, and all of your names, Rashad.
Guess I'm pretty observant, too, huh?
Go on. Shoot me.
Because my people will have all your names
and they will find you.
[grunting]
[dance music playing]
[indistinct chatter]
It's him. His right foot is overpronated.
I got eyes on one of them.
Hey!No! No!
No.
Max!
[grunts]
Josh!
[gunshot]
♪ ♪
Drop her.
Now.
Hands up!
CHAVEZ: You're under arrest.[handcuffs clicking]
I knew...
I knew you'd find me.
[exhales sharply]
Thank you.
♪ ♪
[monitor beeping steadily]
You okay?
Hon?
Jack, will you marry me?
[chuckles] Um...
We're already engaged.
No, we're not.
Not really.
I mean, Chris was right.
I've been dragging my feet. I've been scared
to set a date. You know that.
It's 'cause I was afraid.
But I shouldn't be, because I love you.
And I want us.
I want it to be real.
So, will you marry me?
A-And very specifically,
in two months.
Maybe, uh, Saturday the 14th,
and I know a cake guy, so if we move your dentist...
Yes.
[laughing]
You goofball.
Yes, I will marry you on Saturday the 14th.
[monitor beeping]
Penny...Oh, my God.
Nurse?
Chris?
Chris.
[phone chimes]
Hey.
You hear about Chris?
Yeah.
I mean, it's progress, right?
Oof. So, you ready?
Yeah.
We said our goodbyes a while ago.
[chuckles] FOLSOM: Yeah, adios, pal.
Just give me a minute.
I got something for you.
I'm back?
You never left.
See that?Max told you, then?
Well, we're the same level again.
Uh, excuse me, technically, I'm still your supervisor.
Uh, yes, I am.[laughs]
Okay. Well, all in a day's work.
Good night, Detective.
Yeah. Night.
♪ ♪
Captioning sponsored by CBS
and TOYOTA.
Captioned by Media Access Group at WGBH access.wgbh.org