Original subtitles

♪ Hey, mambo, mambo Italiano ♪

♪ Hey, mambo ♪

♪ Take my hand ♪

♪ Take the lead when we take the dance ♪

♪ Romance ♪

♪ Understand, if you play your part... ♪

Can I hit the slots on my break?

I keep hearing jackpots.

They're making it rain for all the investors.

You know Mr. Flynn will tighten 'em up

when he builds a real casino.

52 stories. 30,000 square feet

of gaming right where you're standing.

Two years, this'll be the hottest spot in Vegas.

♪ Dance, hey, mambo ♪

♪ Hands on my body ♪ (people clamoring in distance)

♪ When we sway mambo ♪

♪ Move with my body when we play... ♪

CROWD: Save the tortoises! Native land!

MAN: Murderer! CROWD: If you build,

they will die! Shut up.

You can't do this!

If you build, they will die! Deadbeats.

(shouting, clamoring continue)

♪ Hey, mambo... ♪

Van.

What the hell? You're supposed to be on top of this.

We're being drowned out by these freaking turtle fanatics.

Tortoise fanatics.

I fenced off the property and beefed up security.

That's all we can do. If any of these animals gets in here,

I promise you, next hole I dig will be for you.

(sighs)

♪ Dance with me baby ♪

♪ Do the mambo like we're crazy, yeah... ♪

(people screaming)

I'm sorry, bud.

(sighs)

Cleaning up after a case

should not feel like we're committing a whole other crime.

What do you want? They helped us solve a double homicide.

They gave their life to science, and now they, uh,

don't fit in the trash.

(phone vibrates) Hm.

It's your buddy Trey again.

Ugh. Yeah, no thanks.

He's not gonna stop.

He is very persistent, you know.

Yeah, I know.

Yeah, I know, but how do you know?

Oh, he, um...

he asked me out.

(chuckles) A few times.

Four times, actually.

You never mentioned.

Yeah, there was never anything to tell.

You told me he wasn't a good guy,

and I believed you, so...

I said no. (chuckles)

Oh.

(phone chimes)

It's not him. Duty calls.

♪ ♪

Thank you so much. Hey.

Hey, boss. What happened?

You know, that's what they pay us to figure out.

This is the site of Bart Flynn's

next casino resort,

and he was hosting a pop-up event

to maintain his gaming license.

How does hosting a party

help you hang on to your gambling license?

It's an old Vegas rule. Use it or lose it.

Some licenses require at least, like, eight hours

of gaming every couple of years

to stay active.

Apparently, Flynn was checking that box

with a bunch of investors, he was just

hyping his next project.

So, lots of people with deep pockets?

And big targets. Nine times out of ten,

a bomb is supposed to make a big mess

and bigger statement.

So, what is this one telling us?

Nothing until LVPD Armor

gets in there and clears it.

We saw some protestors on the way in.

ROBY: Security says that they were trouble all night.

Apparently, this casino resort is being built on

a desert tortoise habitat.

What? Someone really kill a bunch

of people over reptiles?

Stranger things have happened,

but that would be right up there.

I'm gonna go see if it's safe enough

to get started in the tent. Be right back.

The way people were

packed in that tent, could have been

a lot more victims. We were lucky.

Well, I've seen what it looks like when folks get lucky

in a casino. This is not it.

Crater that deep in the middle of the gaming floor.

Looks like a small improvised device to me.

I'm sure your people can tell us whether it was C-4, TNT,

or something more exotic. Well, there's

no soot. Could be looking at

smokeless powder. Of course,

we'd rather not be out here guessing.

We good? Yeah.

Well, then go run your tests.

There are no other explosives out there. Scene is all yours.

Thank you. Allie. Folsom.

So, first things first, preserve the scene.

I want two perimeters.

The blast area gets red tape.

Only CSIs are permitted in the hot zone,

and we need a second area to keep press back.

On it. Yellow's my favorite color.

Guess that makes me red.

Last one to finish is on printing duty.

Well, they can call off the search

for Bart Flynn. That's him,

that's the owner? Yeah.

I met Bart a few times.

He was an upstart in my father's day.

Always a little underfunded and obsessed

with owning something splashy on the Strip.

Long way from the Strip.

Yeah, poor Bart.

He was a hillbilly, not one of the cool kids.

Oh, and this is Clint Farley.

Wait a minute, you know him, too?

He's one of the biggest contractors in town.

One of the biggest jerks, too.

But I don't recognize this gentleman.

Hang on. Okay, there's...

three victims,

seven feet.

Better call the hospital.

Somebody has got to be looking for that.

(laughing)

You're a step slow today, Rajan.

How are you already finished?

I hope you enjoy print duty. I'm...

Aah!

Josh! Folsom!

♪ ♪

♪ 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. ♪

(high-pitched ringing)

(muffled speaking)

ROBY: Josh!

Joshua.

Can you hear me? (grunts)

How many fingers am I holding up?

What's your name?

(loudly): Josh Folsom.

I'm pretty sure she just told you that.

I don't think he has a concussion,

but he should get his eardrums checked.

Huh? Probably should take it easy, too.

You okay? There's no sign, of concussion,

just the temporary loss of hearing.

Hey. Hey.

You're gonna live?

I-I'm fine. I'm perfect.

Really. I am. You're not fine. You are not fine. Look. Look.

Look, seven calls.

You couldn't even hear your phone.

I want you checked out. You're going

to the hospital. Yeah, I'll take him.

I can get someone to cover for me.

No, no. Hey, hey, hey. Don't worry about me.

They're gonna need you on this one. Can I get a ride with you?

Yeah, of course. FOLSOM: Great.

Hey. You sure?

Yeah. Yeah, yeah.

Okay.

(cell phone dings)

Hey, can you grab my coat there? Yup.

I'll get it for you.

Can you run the footage... ROBY: Sergeant Wilcox.

The footage when

the protestor first arrives. Wilcox.

I'm talking to you.

This could be

a terrorist event, and you sent my people

into the lion's den!

Now, one of my best is headed to the hospital...

I assure you, every protocol was followed.

This has never happened before.

ROBY: I don't want to hear your excuses. I want this site

checked, triple-checked,

and cleared. I don't work for you.

No, I don't think you're gonna be working for LVPD either.

Unless you fix it, now.

Bring another robot out to reassess the scene,

twice.

I promise it will be safe.

Good. 'Cause as soon as you clear it,

you're gonna be the first one

that walks out there, right next to me.

FINADO: Four bombs?

Did I hear that right? (stammers) What are we thinking?

Someone has an agenda and no concern for human life.

We need to run prints and DNA on all of these signs.

FINADO: Tortoise habitat protectors--

that's our suspect pool?

I don't see anyone walking around

with a manifesto in their trench coat.

Unless the bomber steps forward and claims responsibility,

the only way we're gonna find them

is by rebuilding their bomb.

They almost always have

a signature.

FINADO: What do we do now-- we wait

for the little robot to give us the all clear?

Don't get me started on that droid.

Medical has set up

a triage tent for the victims.

Check them all.

Everyone who was at that party is a piece

of this puzzle.

(indistinct chatter) (siren wailing)

(grunts)

Did you get it out?

Oh, honey. I'm so sorry.

If Bart's people don't make this right,

I'm gonna pay you double time.

So it's Shandara Roberts and

Ralph Cicero?

You both knew Bart Flynn? Of course.

I own the Lucky Stakes.

The casino across the street.

Shandara's a pit boss there.

My best.

So you were working Bart's party?

At the Cyan?

Mr. Cicero was kind enough

to let a lot of us have the night off.

Well, I feel sorry about that now.

You were loaning employees and partying

with a competitor? I didn't see it like that.

Bart did a lot for this town,

and his new casino here

was gonna drive more business to the region.

Forget about the damn tortoises.

That's what I call a symbiotic ecosystem.

Well, if you're willing to help, we might need access

to your exterior cameras. Anything.

Call me.

RAJAN: What's your name?

Rhonda Alvarez.

You're dressed pretty casually

for a masquerade party.

Any chance you were protesting?

You have my name.

You'll find out on all the police reports

we filed against Clint Farley.

You can read about his harassment,

how he'd run over our tents, roll coal at us.

How did you get into the party?

You were obviously close to the blast.

I didn't do this. (scoffs)

I didn't.

But if he's dead, it's a blessing.

That man was willing to kill an entire species for cash.

The world is a better place without him.

Excuse me.

Hi. I'm-I'm Haley Flynn.

Bart Flynn's daughter.

Can I see him?

I'm so sorry.

Oh, my God.

I was supposed to be there.

He wanted me there

to blow on the dice while...

he dealt craps to, um...

Haley, it's-it's...

Oh, my God.

Can you think of anyone who might...

Anyone who might want to kill my dad?

Hurt him, um, or-or his family.

Or his business.

His business is people. That's what he always says.

And if he were here...

...he'd be helping.

He'd want me to help.

Trey. What's going on?

Oh, bro.

Where's Jeanette?

You're filthy, Fols. You couldn't shower

before coming over?

She isn't here, is she?

You pulled me off a bomb site.

This isn't about my mom at all, is it?

Yo, yo, Jeanette raised me, too, dude, all right?

Listen, it's the only way I could get you to answer.

Listen, I really need your help, okay?

There's this-this deadbeat,

old friend of mine, pain in my ass.

Just... trying to shake him, but some people, you know?

Yeah. Yeah.

I get it.

Well, he came around last night,

broke into my apartment.

So call 911, Trey.

Yeah, I don't need that kind of heat, okay?

He's bad news.

Will you just... will you...

will you take a look?

Come on.

(door closes)

Trey.

You killed the guy? No, no, man.

It's not like that. You've been calling me for hours, man.

You've been playing house with a dead body all morning?

What else were we supposed to do?

He was like this when we got home,

and I don't know how he got in.

He wasn't here when we left.

So you're saying he-he broke in and OD'd?

Okay, I know it looks bad.

Why do you think I called?

Wait, what are you doing?

What you should have done hours ago.

I got a 419, a possible OD

at 7119 Eaton Parkway Hey, what is he doing?

in West Vegas.

Reinforcements are here.

It's about time you came to see me.

Welcome back. Shouldn't that be my line?

Un-retiring agrees with you.

ROBY: All right, everybody, listen up.

The bomb is the whole story here.

We find every piece.

We rebuild them. We find our guy.

WILLOWS: Keep your head on a swivel

and a fine tooth comb in your hand.

We collect, measure, and swab everything.

And I'll buy drinks for anyone

who finds something that tells us how the bombs

were triggered. Oftentimes,

that's the bomber's signature.

Yep. We have heard that.

GILL: So, we have a puzzle and

a scavenger hunt a-and maybe drinks.

I'm in. (chuckles)

ROBY: I've got Beau and Allie

on the construction site bombs.

Everybody here, we're on tent duty.

Got to focus on the deadly ones first.

We sure it's safe to go in there?

Sergeant Wilcox.

Yup.

You and me, let's go. Ma'am.

We rechecked the tent and the perimeter.

So, we're good now, right?

WILCOX: You're good. No secondary device.

("In a Spiral" by Phantogram playing)

♪ I'm a name on a feed ♪

♪ In a spiral ♪

♪ Imitate, elevate ♪

♪ Making heads roll ♪

♪ Every day, every day, in a spiral ♪

♪ Every night, dancing with my shadow ♪

♪ I can see the end is ♪

♪ Coming 'round ♪

♪ In a spiral ♪

♪ Better help me now ♪

♪ I'm going down ♪

♪ Every day, every day, in a spiral. ♪

You didn't find any smokeless powder at your scene?

Everything here was covered in it.

No powder, just propane.

Got us thinking, I mean,

propane tanks are common at a construction site.

They use it to fuel forklifts and welding torches.

We think some of the tanks might have been caught

in the second IED's blast,

which would explain why

we saw three explosions.

So, what kind of residue

did the second IED leave?

None. Maybe the propane

burned off the smokeless powder over there.

Maybe, might have, could have.

Those words die in a GC/MS.

Tell you what, head back to the lab

test all the shrapnel, find out what kind of bomb it was.

We've got it handled here.

You know, most people

assume elements of the bomb

vaporize in the blast,

but that's actually highly unlikely.

You don't say.

Explosions only seem unpredictable until we apply

redux chemistry.

Bomb 101. Totally.

It's always good to review.

WILLOWS: Don't you think it's strange we didn't find any projectiles?

There wasn't one nail or screw, even at the construction site.

Boosting a body count

is usually number one on a bomber's to-do list.

ROBY: I mean, maybe they were absorbed.

WILLOWS: Maybe. I found pieces

of a poker table at the epicenter.

If the IED

was hidden underneath,

it might have taken the brunt of the impact.

(whoops) Heyo! Drinks on Greg.

You find the receiver?

This isn't the receiver.

You found the bomb's detonator.

Shrapnel test number 15.

More propane.

(sighs, grunts)

Got to be trace of an IED in here somewhere.

Um...

could you hand me a swab?

No fingerprints, no DNA.

We're looking at one careful bomber out there,

or a lucky one.

I don't understand who would choose a key fob

as a detonator. The range is only about

30 to 50 feet.

The killer, he-he didn't...

he-he didn't build multiple bombs.

There-there was no second bomb.

Second blast was an accident, just like the third

and the fourth. Th-There was no second bomb.

Slow down, Beau.

(sighs)

Okay.

I swabbed just about every piece of shrapnel

until I found this.

It's the only projectile at the second site that had a trace

of smokeless powder.

Look, look at it.

Do you see how it's iridescent?

Stainless steel turns iridescent when put under

a tremendous amount of heat and pressure.

That piece of metal was at the center of the explosion.

But you just said there was

no bomb at the second scene. There wasn't.

This is a piece of housing

from the IED set off at the party.

In the tent.

The first bomb.

I-I think

a piece of shrapnel from the IED casing

struck the propane tank, causing it to leak.

Because propane is heavier than air,

the vapor pools were just waiting there

for something as insignificant as an ember from

the first blast site to ignite the blaze.

So, the second blast was an accident caused by shrapnel.

Why haven't we found any projectiles

from that first IED?

I mean, not a bolt,

not a-not a ball bearing.

I mean, it's almost like-like the bomber was, like, try...

Like he was trying to minimize the body count.

Only three dead. Why use a detonator

with a smaller range unless

you needed to see the blast?

If there were not multiple bombs,

I don't think this was intended to be

a mass casualty event at all.

You think the bomber had a specific target in mind?

And they waited until that target

was in just

the right position.

The killer was standing right there in the tent.

And they looked the victims right in the eye

when they pushed the button.

Dental records confirm your initial ID's on these guys.

Bart Flynn. Clint Farley.

Third is Dalton Gray.

Gentleman worked on Bart Flynn's personal security detail.

All exhibit a combination of

pulmonary trauma from shrapnel and blast-induced barotrauma.

Barotrauma. A-As in...

As in barometric. Uh, barotrauma's

when you're too close to a blast wave

that decompresses the air around you.

A sudden pressure differential between

the air around your body and the

gas-containing internal organs,

like the G.I. tract, cause the organs to perforate,

inducing massive hemorrhaging.

I thought...

you might want the shrapnel from each of the victims.

Mostly metal,

but about a third of it's wood.

Who knew a table could do so much damage?

You've never seen a tornado victim, huh?

Splinters at these

velocities become bullets.

We have every reason to believe

that one of these men was the target

of the IED. Who got it the worst?

Wow.

It's hard to say.

The symmetrical trauma to the lower half

tells me that they were all equidistant

and facing the bomb when it detonated.

None of these guys started off with a spare foot, did they?

We haven't heard from the hospital.

Can I just say that I hate

when y'all bring me spare limbs?

The paperwork is weird.

(phone rings) Excuse me.

Busy day.

ROBY: I know it's wrong,

but I really wish one of these guys

was in worse shape than the other.

Oh, so you know who was the target.

Well, my money's on Clint.

Allie said there was a protestor in the triage tent.

Hated Clint with a passion.

We should talk to her again because the detonator's range

puts the bomber in the tent.

In that case,

maybe our guy lost five toes.

ROBY: I wonder if Detective Chavez

has ever had to fit Cinderella with a disembodied foot.

(high-pitched ringing)

(groans)

(winces)

(groans)

Isn't this all kind of a waste of time? Guy OD'd. There.

Solved it.

I got to get to work, man. Yeah,

and I'm at work, and my job is

to thoroughly investigate Richie's death.

Uh, if you got places to go, Trey, you're free to go.

Stacey's good to go, too.

All right, awesome. Thanks, uh, Serena.

Mm-hmm.

Way more your vibe than Allie, bro.

Y-You know Allie?

Yeah, Fols introduced us, few months back.

If that's news, my bad, bro.

Yo, tell Allie I say what's up.

(door opens)

(door closes)

I see why you keep that one under wraps.

I'm sorry I had to introduce you today.

It's fine.

Something about this scene I just

don't like.

Yeah.

Me too.

Yeah.

See, I don't like that you showed up here

instead of going to the hospital.

I told you, I'm okay.

All right? A friend needed me.

That's all.

Have you seen my foot? What does it look like?

We are gonna do everything we can

to find out who did this to you, mister...

I'm non-binary.

Van is fine.

Van, the deceased are Bart Flynn, Clint Farley,

and Mr. Flynn's security guard, Dalton Grey.

ROBY: We think that the bomb

was specifically meant to kill one of them.

You were Clint's site coordinator, correct?

That's right.

You don't seem too broken up about his death.

Yeah.

I'm not.

Clint sucked.

He was hostile,

he paid people late, created unsafe work environments.

You know, the only reason he invited me

to that party was to ream me out in front of Bart.

ROBY: Right before the bomb went off.

Walk us through it.

Where were you, who'd you see?

It was hard to tell who was who. I mean,

Everyone was wearing a mask.

Clint put me in charge of getting rid of the protestors.

You know, it's like he didn't understand you legally

can't stop people from protesting.

Okay, so do you recall

where Bart was standing?

Sorry.

It's all a fog.

You remember everything

except where Bart was standing and what happened

right before the bomb went off.

I'm a victim too, detective.

And I'm in a lot of pain.

Talking about this isn't gonna help.

GREG: This is really cool.

But unless I'm mistaken, the killer's not in there.

Park: No. But right about here is where

Penny found the detonator,

35 feet from the bomb's epicenter.

No DNA or prints on the key fob.

No finding the car owner and working backwards.

I'm sure we could buy that fob on eBay today if we wanted.

What about the masks?

We could run DNA on all the masks

that were discarded at the site. You do that,

I could place suspects in this map, give us

a general idea where everyone was

when it hit the fan.

One of those masks belonged to our bomber.

Back to basics.

To the DNA lab.

ROBY: Ooh, you in here without Joshua?

You'd better put everything back where you found it.

Mm. He just texted me. Said he's feeling good.

I, on the other hand, am not feeling so good

about reassembling this poker table

Catherine found at the epicenter.

It's a good reminder not to stand

directly over an IED, isn't it?

Mm. My theory is-is that it actually housed the bomb.

I've been looking for a mount

or some sort of identifying shrapnel.

Wonder why the bomber chose this poker table to put the bomb in

and not one of the other ones. He didn't.

It's not a poker table. The wood shrapnel I found

in Bart Flynn's body-- it's not pine or oak or composite.

I found rattan. ROBY: Rattan.

Like what craps sticks are made of.

This is a craps table.

So Bart, the casino owner, was dealing craps?

I mean, his daughter said that he dealt craps.

It would explain the rattan blown into his body.

He was holding the stick when the bomb went off.

Look at this.

It must be his "everyman" act.

It says here that Bart always deals a few game of craps

at his appearances.

This gap is right where the dealer was standing.

The killer knew exactly where Bart was gonna be

and waited for him to get in position.

I think we just found our intended victim.

HALEY: So my dad was, like,

singled out? WILLOWS: The bomb was placed

under the craps table where your father was dealing.

Everyone knew where that would be.

He was the most powerful man in the room.

He stepped on a lot of toes.

Do you have any idea who, um...

We have a few suspects. Not sure if you're aware,

but the party was infiltrated by protestors.

Protestors have been there since we broke ground.

Poor Mr. Cicero across the street

and his dinky little casino.

He offered to rename it the Lucky Tortoise

if they'd just go away, but, God, those people are rabid.

(sniffles)

Haley, uh...

you broke a nail.

I lost it helping

set up for-for the party.

I'm just too hands-on, clearly.

You told me you didn't go to the party.

I, uh, I misspoke.

I did go to help oversee the party's setup,

but I only could only stay for a few minutes.

I wanted to stay. I-I really wanted to stay.

Okay, hon. It's gonna be okay.

We just have to follow all leads.

If you need to speak to me again, you can call my lawyer.

You've made a beautiful bomb, Chris.

It's just a big physics problem.

Smokeless black powder has a combustion coefficient

of base three.

Our 22-foot blast radius tells us approximately

eight ounces were used, and bing, bong, bing. Shockwave.

It's just simple math. Well, the bomber

might not have run your numbers, but they must have had

some idea how big this was gonna be.

Which is why I think he was standing

right there. Eyeline to Bart Flynn. Close enough

to the detonator they dropped, far enough away

they could get away unscathed.

Who said they were unscathed?

Okay, minimally scathed.

Bart Flynn's daughter Haley broke a nail.

She's only one suspect.

Rhonda, the party-crashing protestor,

was hit by shrapnel. Van lost a foot.

But the detonator

was found on the other side of the room,

opposite Van's foot. I don't like 'em.

Where was Haley? Hard to say.

She said she broke a nail earlier in the day.

But we've got a small army running the masks.

With any luck, we'll have more names on here soon.

There she is.

Uh...

Hawaiian pizza.

Are you sure you're not concussed?

(chuckles)

It's a theme. I got some PTO I got to use,

and I was thinking...

me, you, Maui.

That could be fun.

I just said the word Maui, and you didn't blink.

What's going on?

I let it drop yesterday since y... you almost

died, but

why did you tell Allie about

running prints for Trey and not me?

I-I didn't tell Allie, she was just there

when Trey showed up. Uh, it wa... It...

Honestly, it wasn't a big deal.

You and I had only been together a couple months, and...

...it just never came up.

Uh, well, I remember Trey calling.

We talked about him.

Yeah, and you told me that

I should cut him out of my life.

And, look...

I wish it was that simple.

Okay. Maybe it's not.

Just don't cut me out.

(phone dings)

Ooh, dead guy on Trey's couch.

Just got his record. WLVU dropout,

a few unpaid parking tickets.

That's it.

Doesn't really sound like the villain

that Trey made him out to be.

Do you know more about Trey than you're letting on?

No, but... I don't think

that Richie broke into his apartment.

I think he was there to score.

Josh, if you think Trey's a dealer, you have to report that.

Well, I don't have any evidence, and-and if I seek a warrant,

then there's no un-ringing that bell.

I know you want to protect your friend, I-I get it.

But I don't want you getting burned.

So, what are you gonna do?

Not too shabby, Mr. Finado.

Your bomb housing's coming along nicely.

I'm starting to think we got a pipe bomb minus the pipe.

There's no end caps. And at first,

I thought this was lock was part of a slot machine.

I just watched Chris' simulation.

There were no slot machines near the epicenter. Right.

Got me thinking. What if it wasn't a pipe,

but a money box, like one of those metal toke boxes

found in gaming tables?

A bomber could turn a toke box into a pipe bomb

just by welding it shut.

I mean, it's a pretty clever way to hide a bomb in plain sight.

If I'm right, whoever had access to that toke box--

I'm pretty sure they're the ones who placed the bomb.

There might be a way to pull prints off

of this blackened mess.

Have you heard of liquid latex?

Have I heard of liquid latex?

Yeah. Yeah, I've heard of it.

I was showering.

Sorry. Is Trey here?

He's at work.

I can wait.

Fine. As long as you promise not to join me in the shower.

I promise.

The couch is there.

Ah.

(door closes)

Mind if I get some water?

Yeah, that's fine. (shower running)

Same hiding place for 25 years.

Uh, thanks for the water, but I got to go.

♪ This old smoke-filled bar ♪

♪ Is something I'm not used to... ♪

What's going on? RALPH: They asked me to call you in,

Shandara. I'm sorry.

I told them I didn't believe you would ever... Thank you,

Mr. Cicero.

We'll take it from here. Thank you.

Shandara. You are a difficult woman to get in touch with.

Well, I'm sorry. It's just, uh...

I don't really want to relive that night.

I assume that's what this is about?

The bomb at Bart Flynn's party was housed in a toke box

placed at his craps table. And you were pit boss

that night, in charge of collecting money, and your...

your prints were all over the box.

Well, were mine the only prints on it?

We don't know that, but we know you had access to it.

Well, of course I did.

But a lot of people had access to toke boxes.

Uh, my croupier, Ms. Flynn.

Haley Flynn?

Ms. Flynn says that she left before the event.

And no one has challenged her story,

and no one saw her.

Well, I did. She was in a worker's mask.

A worker's mask?

Staff wear black masks to distinguish us from guests.

I wouldn't have realized it was her,

but then she took her mask off and threw it away.

She threw her mask away? Right on the ground.

Spoiled brat.

How many masks are waiting to be tested?

Okay, only 23 worker masks to go.

Anyone seen Catherine?

She wanted me to run background on Haley Flynn.

What you got? Ms. Flynn set a lab on fire

in college because they were testing on animals.

Daddy covered for her.

And she's major donor to A Home for Tortoises,

Rhonda Alvarez's company.

Haley was at the masquerade party masquerading

as a worker. Got her DNA right there.

So, Haley and Rhonda were in on this together?

We had the wrong motive. Right lady.

Looks like daddy's little girl didn't kill for money.

She killed for a cause.

You think I killed my father because of a fingernail?

We didn't find any DNA on the fingernail.

We did find a worker's mask with your DNA on it.

CHAVEZ: You lied to us about

being at your father's party.

You also have a history of arson

and association with Rhonda Alvarez.

This is crazy.

I did not plant a bomb to kill my father.

Then why were you at the party?

I care about Rhonda's cause.

And my dad, he couldn't care less about the effects

this new casino would have on the environment.

I just wanted to make him listen.

So you let Rhonda in so she could

kill your father? I let Rhonda in to disrupt the party.

She didn't tell me she was gonna blow it up.

I didn't think that she... I'm gonna advise my client to stop talking.

Yeah, it's a little too late for that.

You're under arrest, Ms. Flynn.

Hands behind your back.

No, please. Please. I didn't do this.

Hit it. Okay.

Methamphetamines laced with levamisole.

That's that medication they use to treat animals

with parasitic worms.

Is the source of these drugs that OD?

Uh, w... Yeah, the, uh,

the vic, Richie-- he was cranked full of meth,

but it was the levamisole that killed him.

According to the tox report, he... Mm.

he was allergic. Mm.

Any reason there's no case number on here?

Huh? What's going on?

Well, I, um... Listen, in order...

Just stop. Just stop.

For the sake of argument, let's say

that you were running tests,

off the books, on a case involving your friend.

This isn't off the books. I-I did start a case.

You ran it three times, Joshua. It's positive.

You have double confirmation,

you have the drugs linked to a presumed drug dealer.

Mm.

And a dead guy in a room.

Max... You gonna run it a fourth time?

You are a loyal friend, Joshua.

But now would be a good time for you to remember who you are.

SANDERS: We found no trace

of smokeless powder on Haley or Rhonda's hands.

Yeah, we need more. So...

we spoke to the slot route operator

who supplied the casino equipment for the party.

Let me guess, not his toke box.

A big no.

But he did say each lock comes with

its own proprietary non-duplicate key.

So the missing key will be...

Key? If we can reverse engineer it,

the manufacturer should be able to tell us where the lock sold.

If we can find where Rhonda or Haley bought that toke box,

we got her.

Beau is with a locksmith now.

Still sharp, Greg-o.

Sounds like you got this handled,

so, what am I here for? Advice.

You know I've always trusted your opinion.

I love the new hairstyle. I'd keep it.

Thanks. I like yours, too, but this is about work.

I'm almost kind of halfway thinking

I should come back here full time.

I mean, the hours aren't great,

but forensics is in my DNA. And what?

What's the other part of you want?

I've already written five books.

I love to share what I know.

It's scary to contemplate a third career,

but I'm thinking about going to grad school

to become a professor.

Well, you have been trying to teach

the new kids all week.

Imagine how much fun it would be with actual students.

Hey, we got a match on the lock.

We just need to make sure it's the right person.

Greg, do you want to help me in Trace?

Dr. Gregory Hojem Sanders.

Go get 'em, Doctor.

Remember giving us this?

WILLOWS: Did you know that smokeless powder residue

lingers in the user's sweat long after use?

BEAU: We found a mix of your DNA and smokeless powder on the card.

That was after the locksmith

linked the lock that we found at the bomb's epicenter

to your casino.

You built and planted a bomb in the tent

to kill Bart Flynn, Ralph.

(indistinct chatter)

You waited for him to get into position,

and then... boom.

(people screaming)

The power of the bomb surprised you, huh?

You left your detonator behind.

(scoffs) I...

I'm a businessman. I'm not a...

I'm not... I'm not a maniac.

You're not a gun owner is what you're not.

You have no weapons registered in your name,

so can you think of an explanation as to why

you had smokeless powder

on your hands?

I've fought vultures like

Bart Flynn for decades.

You didn't want neighbors.

Lucky Stakes may not be fancy.

My little corner of the desert may not be much,

but it's mine!

You used the protestors as patsies.

You wanted Haley to inherit her father's land

because you knew she would never build a rival

to your casino.

You can't make it in the casino business

if you don't know all the angles.

HALEY: I guess the house doesn't always win.

Could have told you Ralph was a freak if you just asked.

You knew Ralph didn't want you to build a casino.

No one wanted my dad building that casino.

He said it was for me.

As if I needed a bigger inheritance.

But it was all for his ego.

His big dream.

And you're not gonna build his dream

in his honor, are you?

So, Ralph Cicero

gets what he wants after all.

I don't know.

I mean, did he want to die in prison?

What couldn't be said on the phone, man?

Stacey called, man. They're searching the place.

You got to stop 'em.

Trey, I'm not gonna do that.

Oh, wow. (short chuckle)

You called it in, didn't you?

Trey...

I trusted you. Trey.

Damn it!

Trey, Richie wasn't a bad kid, man,

he was just lost, and you took advantage of that.

Richie was a grown-ass man, man. He made his choices.

And you made yours, and it's called drug-induced homicide.

You forget who you are, man.

Being around you makes me forget who I've become.

You see, this is why Jeanette doesn't trust you.

Your own mother doesn't trust you. You know,

she told me not to talk to you, (car approaching)

but I didn't want to believe her.

You want to know wh...

You didn't just call for a search.

No, I didn't.

You're going in, man.

Oh, you want to add assaulting an officer to your charges?

Go ahead, man.

Take him. Hands behind your back.

I was your brother, Fols.

Hey.

Hey!

This how you treat family?! Let's go.

I was your brother!

Captioning sponsored by CBS

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Captioned by Media Access Group at WGBH access.wgbh.org