The Flash

Previously on The Flash...

Together, you and Cynthia could be an unstoppable duo.

You wanna be the new Breacher?

Your Thinking Cap and the dark matter is what caused this.

I know!

How long before everything I know is gone?

DeVoe has taken out everyone who's gotten in his way.

He created 12 meta-humans, just so he could steal their powers.

Why does he need their powers?

The fire that burns down Team Flash

will also light the path to the Enlightenment.

OXFORD UNIVERSITY EIGHT YEARS AGO

Since the age of Enlightenment,

when reason, debate, and the search for truth flourished,

the world has improved by nearly every measure

in human advancement, and continues to do so.

There is no doubt in my mind

that as technology continues to bloom,

so will all of humanity.

Professor DeVoe?

You disagree?

Well... yes, I guess.

Just, I have a more realistic view

of humanity whenever technology is concerned.

What do you mean?

Well, you spoke of the Enlightenment.

One only has to look at history to find the answers.

Okay, let's.

Life expectancy over the past two centuries

has increased from 30 years to nearly 70 years.

And-and we should assume that's a good thing?

Each new day, we have to share

very limited resources with anything up to

200,000 newborn babies,

most of whom will end up living

in abject poverty and famine.

Well, thank you very much, Professor Doom and Gloom.

Remind me never to take one of your history classes.

Perhaps you should. There's much I could teach you.

The Taoists, in pursuit of immortality,

discovered gunpowder.

Alfred Nobel created the Nobel Prize

so he wouldn't be remembered

as the man who invented dynamite.

History has shown us time and time again

that whenever a technological advancement

can be used to hurt humanity, it will be.

You can't blame technology for the way

men choose to use it, Professor.

You can't ignore that the best of ideas

by the smartest of men often have a way

of becoming corrupted.

VANDERMEER STEEL - ALLOY 1771

You've located everything we need.

And now the time has come to retrieve it

so we can finally...

enlighten the world.

Hey, babe.

It's me. Just checking in.

For my dad.

He... really wants to know your answer

about taking the Breacher job.

I think his exact words were:

"That little son of a Breach better tell me,

or they will never find the body."

Yeah. But you know what?

He's retired. He can wait.

So just take as much time as you need.

- Okay? It's... - Don't say it's fine.

- You know. - Don't say it's fine.

- It's fine. - Oh, God.

- It's fine. - Okay.

So, just five me. Whenever.

Okay. Bye.

Ramon, speed lab. Now.

Good! Good, good, good.

Good, good, good good, good.

Thing we're gonna do to get Killer Frost to appear,

get that massive spike

in your adrenaline production that we need,

is, Ramon is gonna use his vibes

to shake you up on the cellular level,

and let's see if we can't get your old friend

Killer Frost to come out to play.

Are you sure this is gonna work?

Well, I mean, like any hypothesis,

you have to test it to get an answer.

It's what we've all done since

the fourth grade, known as the...

Scientific method?

Right you are, Allen!

Of course. Ah, here he is.

Okay, good. So get in position.

Don't worry, I lowered the amps on this thing.

Ramon, you set?

Yeah.

Snow, you ready?

I'm ready.

Three, two, one, and...

Nothing.

All right. Ramon, more power.

Set? Three, two, one...

All right, this isn't working.

You know what, Ramon? Full power.

Wait, hold on, hold on. What do you mean,

full power? We don't want to blast Caitlin

across the speed lab.

Well, you need to get a spike in her adrenaline.

- Harry, she could get injured. - Yeah.

God, this is... look, this is

gonna work, okay? Nothing has changed.

All right? Snow's DNA tests,

they confirm it. Her meta-DNA

was not spliced by Noah's powers.

You mean Melting Point's powers.

Right, that's what I said. Melting Point's powers.

- No, you didn't. - I did say that.

But, Harry,

there's no dark matter in her system anyway.

We're just trying to spike her heart rate.

What do you mean, there's no dark matter?

Harry, you knew that.

We all did.

We did? We did. No, I know.

I just, I think I just, you know, forget.

I forgot.

You forgot?

Harry, are you okay?

No. He's not.

Harry, you're...

Losing my intelligence? Yes.

The injection of dark matter from the Thinking Cap

apparently overwhelmed my synapses.

Instead of making my brain faster, it's...

slowing it down.

Why didn't you tell us this sooner?

How long until...

No way of knowing.

I mean, there are days I can think clearly

and other days...

I... I can't.

The good news is... from what I can see,

the regression seems to be reversible.

Okay, great.

I'll start working on it full-time.

No, you won't.

I did this to myself,

and I-I thought "Oh, you know what?

"Use that Thinking Cap, and then I can

outthink Devoe and then stop DeVoe."

I was wrong. Now here we are.

Okay, well, we're gonna fix this.

You and I both know there's a ticking clock...

and I can't help anyone like this.

Yes, you can.

How?

Look, guys.

Ralph...

Caitlyn's powers, now this.

DeVoe knew how to break us apart, but...

I mean, we're all still here.

We're a family.

That's how we're gonna beat DeVoe.

All right, Allen.

All right.

Vandermeer Steel.

Smaller than I expected.

The first step to our Enlightenment

is as simple...

As opening a door.

Alloy 1771.

Now, the gallium antimonide substrates within these

can harness power at 400% efficiency.

The precise amount, I calculated.

You can pick 'em up.

Freeze!

You should let us leave.

I can't do that.

Yes, you can.

How are you...

We have what we need.

I suppose we do.

Code Red! Code Red!

Clifford. This is unnecessary.

You knew there were gonna be casualties when we began.

This is his own doing.

Yes, my love.

What are we dealing with?

First of all, we're trying to determine what was in that vault.

Watch your step right here.

There was no drilling, there was no lock picked.

And the only thing anybody would tell us

about what was in the vault was that

it was some sort of secretive technology.

Also, security guard here

was a 24-year-old, apparently shot himself.

Wait, a robbery and a suicide?

He was newly married.

Has an infant at home.

This is smelling like some meta madness to me.