Original subtitles

This list you left outside my door...

"Item one: Return Clyde to Watson."

I enjoy his company on the weekends;

she has him during the week.

I don't care how you divide up your turtle.

I care that you're asking me to take him to Chelsea.

Part of our arrangement, you will recall,

is that you assist with quotidian matters when I'm busy.

"Busy?" You're watching a turtle eat lettuce.

I'm conducting medical research.

Remember, I cut my hand

while we were dissecting that cadaver?

I'm tending to the wound as we speak.

I'm also demonstrating that leeches

can be useful in accelerating

the repair of damaged tissue.

That is disgusting. You're bleeding yourself.

And you are perpetuating a long-held prejudice

against these creatures.

If you say so.

I'm still not taking your turtle on the subway.

If that's for me,

I'm going to need a few minutes.

I'm feeling a bit faint.

So, sorry, I was a bit distracted upstairs.

I didn't catch your name.

Edwin Borstein.

I have a friend

from London who's used you before.

He said you're excellent.

And discreet.

Why have you need of my discretion?

I run a software company.

We specialize in AI applications.

I assume you know that

that stands for "artificial intelligence."

Yes, I'm well-acquainted with the field.

A couple of nights ago, someone broke into our lab.

They made a copy of a program

that we've been working on.

I rigged the computer to take a photo

every time it's booted up,

just in case something like this happened.

So I have a picture.

Kind of.

So there was a burglary.

You've got a picture of the criminal.

Seems like the police should have this well in hand.

This program...

it's significant.

We call it "Bella."

Its AI engine is... unique.

It... she...

performs better than

anything you've ever seen, I promise.

She performs better than we expected her to.

Explain that.

A few weeks back, she made a request

that can't be accounted for by her programming.

Impossible.

What's impossible?

For the computer to ask for something?

If it made a request, it did so

because that's what it was programmed to do.

He's claiming true machine intelligence.

If he's correct in his claims,

he has made a scientific breakthrough

of the very highest order.

Bella isn't hooked up to a network.

It's a security thing.

If she has data, it's because we fed it to her.

But two weeks ago, I booted her up

and she asked to be connected to the Internet.

And how, pray tell,

does your software know that the Internet even exists?

She could have intuited its existence

from data fed to her.

Bunkum.

There is no such thing as "artificial intelligence."

At least not in the sense you're talking about.

It's all just clever programming.

I don't think so.

Not with Bella.

I still don't understand.

So are you going to rip open

the computer and look at all the wires?

Something called a "Turing Test"

is routinely issued in AI labs.

An examiner sits in front a computer,

poses a series of questions

until he or she can determine whether the answers have come

from a human or from a computer.

Until very recently, no machine has ever passed.

And now one has?

Partially.

A program named "Eugene Goostman" was designed to mimic

the responses of a 13-year-old boy from Eastern Europe.

It fooled some of its examiners.

Now, in the case of Bella,

we know there's no human in the equation,

so if I can trap it into giving responses

that couldn't possibly have come from a human...

I'll have won.

So, in other words,

you don't really know what you're going to do.

This is my partner,

Melinda Young. Melinda, this is

Sherlock Holmes and his, uh, prot�g�, Kitty Winter.

Mr. Holmes would like time with Bella.

We wired the speakers and microphones

through that doll.

You can go ahead.

Right.

Hello.

BELLA Hello.

Did you ask to be connected to a network?

Yes.

Why?

There is information there.

Information is useful to solve problems.

Why is it useful?

I don't understand the question.

Could you tell me more?

You stumped her. Are we done?

The test isn't over

because she's stumped.

She's admitted she doesn't know

and that's within the range of possible human behaviors,

and therefore inconclusive.

I would like to know how you have arrived

at the concept of "useful,"

and how you have applied it in this instance.

I don't understand the question.

Could you tell me more?

I'm gonna need some time alone with the machine.

I don't understand the question.

Could you tell me more?

Yes, so you keep saying,

ad nauseum.

I would like to understand

how you became aware of the existence of networks,

and why you asked to be connected.

The existence of networks

can be intuited from data sets

that were presented as givens.

There is information on networks.

Information is useful for solving problems.

What is your understanding of the word "useful"?

If a piece of data can help solve a given problem,

it is useful.

Is that a definition you came to on your own?

I don't understand the question.

Could you tell me more?

Why don't you just admit that all you're doing

is following your own programming?

I don't understand the question.

Could you tell me more?

I'm taking a break.

Everything okay?

Thank you for coming.

It's like I said on the phone,

he just won't stop.

You got any ideas?

You're not planning to destroy the computer, are you?

No, I'm not planning to destroy the bloody computer.

Just ride it out. If he starts hitting things,

use the fire extinguisher on him.

Is love real?

I don't understand the question.

Could I have more information?

Love.

Surely it's a human construct,

a hedge against the terror of mortality.

I believe that.

But that doesn't account for times

I've felt it itself.

With my mother.

Irene.

Even, after a fashion, with Watson.

It vexes.

Love is either a human construct

or it's a real thing, right?

I know, you need more information.

The question cannot be answered.

The concept of "love" exists,

therefore it is useful even if it is a human construct.

It exists because it serves a need.

A question that can be answered might be,

"Why is love needed?"

Why is love needed?

I don't understand the question.

Could I have more information?

Call Edwin Borstein.

Tell him I need to sleep for a couple of hours

and then I'll take on his case.

Free of charge.

Hey.

You guys ready to get started yet?

Is he up? He's awake.

I don't know how much use he's going to be, though.

Hello.

Hi.

Um, isn't it a school day?

I'm in college.

She can come in.

Watson, this is Mason.

Like many of his generation,

he's named after a profession

his parents would never deign to practice:

Hunter, Tanner, Cooper, Mason, so forth.

Yeah, like "Sherlock" is such a great name. In spite of that,

he's done some significant work in AI modeling.

And these are some other experts in the field.

Experts, Watson. Watson, experts.

And they're helping us how?

We're devising a plan to beat Bella, of course.

I didn't prove that the machine is engaging

in some kind of rudimentary thought,

I just failed to disprove it.

Okay. Except our job is not to "beat" the computer.

Our job is to find out who copied the program.

Technically true. But I'm not being paid,

so I'm free to work as the muse dictates.

Borstein's paying your fee,

so you'd best get cracking.

Good luck. I have every confidence.

Et cetera, et cetera.

Your man's obviously no amateur.

He headed straight for Bella.

He didn't muck about,

he knew what he was looking for.

So, industrial espionage?

He's a little bit too old

to be playing cat burglar, don't you think?

Well, I don't know.

It's hard to tell behind the mask.

Look at his neck.

He's got liver spots coming in. Tips of his teeth

are stained... he's a smoker; a heavy one, I'm guessing.

Okay, so we have an older guy

who smokes about a pack a day.

Does that help us?

I'm not sure. But like you said,

he had to know that company like the back of his hand.

Which means that he had to case the place.

What is it we're looking for?

Edwin Borstein's company is in there.

We want to find a spot

where we can get a good view.

Someplace where not too many

people would bother you.

So how did you feel

after the, um, support group meeting the other night?

They said a lot about

finding peace and balance.

Stuff like that.

I don't know, it's a little...

confusing, really.

I think they've had a fire up there.

Oh, yeah.

Looks like a good place to sit

and watch the building across the street.

Perfect view of Borstein's office.

Gauloise. Unfiltered.

These'll leave a nasty stain on your teeth.

Right. From this moment forward,

no one must refer to Bella as "she."

Bella is an "it."

We must not be lured by the temptation to anthropomorphize.

I really hope it didn't take eight experts the whole morning

to come up with that.

We developed a number of refinements on the Turing Test.

It was a very stimulating few hours. And you?

Your message said you've been out collecting cigarette butts.

We think we found the place

where the burglar staked out Edwin Borstein's company.

Marcus ran the DNA on the butts.

We didn't find a match, though. Not exactly.

Four years ago, someone broke into the genetics lab in Harvard

and stole the first written copy of the entire human genome.

The burglar cut himself climbing through the window,

and he left some blood behind

which matched the DNA that we found today.

The witness saw the guy driving away.

Police in Cambridge made a sketch.

Yeah, we've been looking through arrest photos,

hoping to get lucky.

His name is Raffles.

You know him?

His name's Raffles? It's a nickname.

Scotland Yard gave it to him when he reminded somebody there

of the gentleman thief in the novels by E.W. Hornung.

Raffles is a cat burglar in Europe,

active in the '90s and early aughts.

I never pursued him, which might explain why he was never caught.

But they did arrest one of his associates

who gave them the sketch of Raffles.

And he looked like this fellow.

You said he was stealing paintings.

He's going after pieces of technology now.

Why the change in M.O.? I don't know.

If we find out why, we'll be closer to finding out who he is.

We need to see what the department has on file

with regards to Raffles.

Oh, you're deigning to join us now?

I have a strategy to best Bella.

She...

it will not frustrate my efforts again.

And besides, until five minutes ago,

you were pursuing a garden-variety burglar.

Now you're after Raffles himself.

Of course I'm joining in.

Food's almost done.

Oh, sorry, I, um...

I checked my inbox before dinner.

I've been on this really interesting chain all day.

Your former partner, uh...

current partner?

Hard to keep track... Holmes.

He emailed me this morning.

He's working on some AI thing?

Did he ask you for help?

Uh, me and a bunch of other people.

He knows I got started as a software developer.

I guess you also told him I sold off my company,

so I've got some free time.

Some of the people on the chain, they are seriously sharp.

I went back and forth with a few of them

about AI, data havens...

geek stuff.

Has he asked you for help before?

No.

It's not a problem, is it?

No.

Morning.

No Kitty?

She's tending to a personal matter.

Why did you ask me to meet you at Burnett Technology?

We're seeking an audience with Robert Burnett,

and he's the CEO.

My investigations yesterday revealed

there have been half-dozen or so notable thefts

of new inventions over the last eight years...

all of them unsolved,

but all of them bearing the hallmark of Raffles.

Now, I couldn't make sense of this sudden change in method.

It doesn't track unless he's been incentivized in some way.

Incentivized?

I started to wonder if Raffles had found himself a patron,

someone who'd convinced him to put his skill set to use

in the cause of science.

You think he has a boss now?

The list of people who'd be interested in the kind of things

that Raffles is stealing, that's very large.

But the subset of the list who could actually afford

to subsidize that pursuit,

that's much smaller.

And does that include Robert Burnett?

As it happens,

Burnett hired himself a new security consultant

nine years ago.

He reports directly to the CEO.

I think you'll find he looks familiar.

"Rupert Kerlich."

Rupert Kerlich... is Raffles.

You found Raffles.

I'm sorry, Mr. Burnett wanted

to ask one more time what this is about.

Tell him we're here to discuss Raffles.

So, you e-mailed Andrew. I did.

Was it because you're actually interested in his opinion,

or were you just looking for an excuse

to poke around in my life?

Andrew is a currently-unemployed software developer.

He's not unemployed, he sold his start-up...

he's looking for his next idea.

"Looking for his next idea"

is another way of saying "he's unemployed."

Anyway, he has the aptitude

and the free time

to address problems regarding computer programming.

His comments were quite salient.

He is not an unintelligent man.

Mr. Burnett will see you now.

Good morning.

No need to get up.

We know that several years ago

you somehow learned that the thief known as "Raffles"

is actually a man called Rupert Kerlich.

We also know that you hired him and set him to work,

stealing technological breakthroughs on your behalf.

Whoa, slow down a second.

It would be simple enough to prove

and ignite a scandal that would destroy you

and, most likely, your company.

However, we have no desire to render tens of thousands

of people unemployed.

So, instead, I propose a bargain.

You send me a recording of your man

deleting Bella from your servers,

I leave you un-ruined.

If, of course, I so much as suspect

that you've kept a copy,

or if Burnett Technologies makes a sudden breakthrough

in the field of artificial intelligence,

our contract is void.

You have, shall we say...

the rest of the day to think it over.

The video is, of course, no guarantee

that every copy of the program has been deleted.

But I think we're as certain

as we ever will be that Bella is secure.

This is fantastic.

We need to show Edwin right away.

Oh, my God! Edwin?!

I'm a doctor.

Oh, he must have had a seizure.

He has epilepsy.

I'm sorry, he's gone.

As near as we can tell, Borstein booted up that program...

"Bella" you said it's called?

Well, as soon as he turned it on,

for some reason it started flashing all those images.

It triggered something called a "tonic-clonic seizure."

He was dead in minutes.

What do you think happened here?

Could this have been some kind of malfunction?

Absolutely not.

Computers obey their programming,

even when they crash.

They don't just randomly start flashing images

of the pyramids of Giza and God knows what else.

Someone infected that computer with a virus

that triggered a fatal seizure.

Edwin Borstein was murdered.

I don't think that's possible.

Bella's not hooked up to a network.

She couldn't have picked up a virus from the Web or e-mail.

Well, someone installed it, then.

We scanned her for viruses

after the break-in.

There was nothing.

And aside from that,

Edwin and I are the only two people with access to Bella.

You are the only other person who's ever operated her.

With the greatest of respect,

and if you and Edwin are the only people

with access to Bella,

then either you or Edwin installed the virus

which killed him.

You guys have to ask yourselves if I did it.

I get it, I really do.

I'll answer any questions you want.

You can scan the machine for viruses.

Whatever you need.

But I know that I didn't do it.

And there is...

one other possibility that you should at least consider.

Bella was, um...

at the very least, displaying signs of actual intelligence.

She asked Edwin if he would connect her to a network.

Edwin said no, over and over.

It's possible that she deduced

that the one variable that was keeping her

from getting what she wanted was the person operating her.

If she thought that, it is also possible that she decided to...

...change that variable.

You're saying that your computer program murdered Mr. Borstein?

I know that Edwin told Bella that he had epilepsy,

when he was looking around for new doctors.

If she wanted to get rid of him,

she had the information she needed to do it.

Everyone who works in AI knows...

it's possible that when someone develops

real artificial intelligence,

the relationship between the programmer and the program

could become adversarial.

I'm sorry, Miss Young...

I know you've had a shock tonight, but...

it is very much an open question

as to whether or not your program is a genuine piece

of artificial intelligence.

Even if it is,

I find it very difficult to concede that a collection

of ones and zeroes is a suspect in a homicide.

Excuse me.

Whoa.

Whoa, whoa, whoa... what are you doing?

Depending on your perspective,

this machine is either a murder weapon or a murderer.

Either way, it can't be left

to sit here unattended all night, can it?

Imagine the schemes it might hatch.

Yeah.

I don't know what to tell you.

There's no virus on here.

Look again.

I've looked four times.

I don't know,

maybe that lady was right.

Could it have been a virus that was programmed to erase

all trace of itself once it had run its course?

You can do that and fool some people.

But there's always some hint in the code.

With this, there's nothing.

I'm sorry, I thought Edwin's partner was just

in shock, or something.

I mean, what she was suggesting sounds insane.

Are you saying you think there's a chance she's right?

Well, if this program is real AI, then yeah, absolutely.

Everybody knows that one day intelligent machines are

going to evolve to hate us.

It's a "button-box" thing.

What's the "button-box" thing?

It's a scenario somebody blue-skyed at an AI conference.

Um, imagine there's a computer that's been designed

with a big red button on its side.

The computer's been programmed to help solve problems,

and every time it does a good job,

its reward is that someone presses its button.

We've programmed it to want that.

You follow? Sure.

Right, so at first, the machine solves problems

as fast as we can feed them to it.

But over time, it starts to wonder

if solving problems is really the most efficient way

of getting its button pressed.

Wouldn't it be better just

to have someone standing there

pressing its button all the time?

Wouldn't it be even better

to build another machine

that could press its button faster

than any human possibly could?

It's just a computer,

it can't ask for that.

Well, sure it can.

If it can think, and it can connect itself to a network,

well, theoretically, it could command

over anything else that's hooked onto the same network.

And once it starts thinking about all the things

that might be a threat to the button...

number one on that list, us...

it's not hard to imagine it getting rid of the threat.

I mean, we could be gone, all of us, just like that.

That escalated quickly.

Well, it would escalate quickly.

I mean, they're computers.

They can't be reasoned with.

They don't feel pity, or remorse, or fear.

And they absolutely would not stop,

not ever, until we're dead.

That was from The Terminator. He's quoting The Terminator now.

So? That was a very prescient movie in a lot of ways.

Mason, unless the machines rise tonight,

we have a murder to solve.

Is there anything else you can do with Bella?

If you think about it,

the computer's kind of like a suspect, right?

I mean, shouldn't we, you know, interrogate it?

And how would you propose to do that?

Uh, Bella, did you kill Edwin Borstein?

No.

Okay, I'm gonna go home for the night.

Best of luck here.

But you won't need it.

She's about to crack. I can tell.

Oh, maybe when you're done, you want to unplug that thing?

You can never be

too safe.

Oh! Sorry I'm late.

I was questioning a computer in a murder.

"Questioning a computer."

There has to be a story there. Ugh.

Not for tonight.

Oh, champagne!

I guess you have your own story, huh?

One of the guys I've been e-mailing with,

his name's Magnus.

He's been working on an idea for a completely automated factory.

Same thing I've been fooling around with.

We've been trading ideas all day.

He's a super-sharp guy.

I think I'm gonna give it a go.

What? You found your next business?

Well, there's gonna be a get-to-know-you phase,

of course, we're gonna spend some time

brainstorming, but I think so.

That's fantastic!

When are you guys gonna get together?

I fly to Copenhagen in a couple days.

He lives in Denmark?

Well, yeah.

I mean, his name's Magnus, so...

Uh, so where's the business gonna be?

Well, I'd have my office here, of course.

But Magnus already has a plot of land

over there for the model factory.

It'd be a back-and-forth thing.

Oh, so you're gonna be spending a lot of time there, huh?

Some, I guess... I don't know.

We're still figuring it out.

Uh, there's plenty to do here, too.

Funny how life works out, huh?

Holmes puts me on an e-mail chain,

and 36 hours later I'm...

Got a ticket to Copenhagen.

We're listening to that.

Did you, by chance, arrange events

so that my boyfriend will be spending

lots of time in Scandinavia?

I haven't got the slightest idea

what you're talking about.

You knew that Andrew was looking

for his next business idea.

You knew that your friend Magnus had a good one.

Andrew is on the next flight to Copenhagen.

And you don't have to deal with the fact that someone else

is making claims on my time.

I suppose I should be flattered that you think

I'm capable of manipulating events to that degree of detail.

Well, I wouldn't put it past you. Would you?

I'm not involved in this conversation.

Watson, I assure you I am quite content for Andrew

to make claims on your time.

I did not arrange for him

to find work in Denmark.

But if I'm honest,

I'm quite glad that he did.

Life is so much better with a vocation, don't you think?

Speaking of which...

Why are you listening to this?

Is this even music?

Death metal.

After we sent Mason home last night,

Kitty and I pored over Edwin's personal computer,

his smart phone...

Mr. Borstein is a man of many eccentricities,

one of which is a fondness

for this particular strain of extreme music.

He's a regular commenter

on several Web sites which track its comings and goings.

Another fan, the man who goes

by the name of Schuldiner online,

got in a correspondence with Borstein.

The two of them traded music discs.

Discs which Borstein then loaded onto his computer

so he could listen while he wrote code.

� �

Did he upload music

to the same machine that has Bella on it?

He did. They were the only exterior files

of recent vintage that we found on his computer.

Kitty retrieved the disc this morning

from Borstein's lab.

We're listening for anything unusual.

� �

How could anyone work with this on?

Rather like rubbing a belt sander over one's brain.

There are moments when that's necessary.

Who wrote this one?

"Goatwhore."

Is that part of the song?

That is the sound of a CD player

trying to read files which are not encoded with music.

There's something hidden on that disc.

Yeah, yeah.

There's a computer program on here.

It's called "greatshow.exe."

And that would've uploaded onto Edwin's computer

when he transferred the music.

Well, sure, if he copied it

by dragging the icon onto the desktop.

What does it do?

So, someone slipped

a computer virus onto a disc

filled with heavy-metal music,

and then shipped it to Edwin

so he would have a fatal seizure.

There had to be easier ways to kill him.

Dozens. Hundreds, even.

There must be a reason that the murderer wanted

him to die in precisely this way.

Might've even wanted people to speculate

that Bella was responsible.

So this guy Schuldiner murders Borstein

and then frames his computer?

Why?

Okay, yeah. I use the name Schuldiner

to post to the Web site.

I guess the guy who owns the place

told you my real name?

Look, I didn't kill Edwin, though... why would I?

I don't know what you had against the man,

but you mailed him a disc,

and on that disc was a computer virus,

and that virus

triggered an epileptic seizure

that killed him.

Man, I-I don't know anything about computers.

You think I know how to write a virus?

I'm a busboy.

All right, so Michael Webb is either an imbecile,

or he's a genius at impersonating imbeciles.

It doesn't seem like he could pull this off, I agree.

But the package came from him.

That much he admits.

Could've been tampered with.

So, someone knew he corresponded with Borstein,

intercepted the package,

and then replaced his disc with the corrupted one?

Well, it's either that or this man's responsible

for one of the most complicated murders

I have ever investigated.

So, who then?

Don't know. Not yet.

We simply need to find a person who would most benefit

from having the world believe that Edwin Borstein

was murdered by his computer.

Hello?

Why did you make me pick a lock to get in here?

I'm thinking.

Kitty is out doing my bidding,

and there was no one available to answer the door.

Thank heavens you're resourceful.

"Artificial Brain"? Yeah.

Quite stimulating, in their own way.

I've had a rather productive evening in their presence.

Meet the suspects in the murder of Edwin Borstein.

They are all employees

at something called ETRA.

The Existential Threat Research Association.

ETRA is a think tank.

It is one of several institutions

around the world which exists solely for the purpose

of studying the myriad ways

in which the human race can become extinct.

So these people sit around and think about the apocalypse?

They sit around and think about all possible apocalypses.

As far as these men and women are concerned,

it is a race to the finish line.

Now, within this think tank,

there is a small, but growing school of thought

that holds that the single greatest threat

to the human race...

is artificial intelligence.

So, Mason's rant the other night?

Not as barmy as it sounded.

According to these people, the very first time

a genuine piece of artificial intelligence manifests,

we'll be in a fight for our survival within days.

Now, imagine their quandary.

They have pinpointed a credible threat,

but it sounds outlandish.

The climate-change people,

they can point to disastrous examples.

The bio-weapons alarmists,

they have a compelling narrative to weave.

Even the giant comet people sound more serious

than the enemies of AI.

So...

these are the people at ETRA who think AI is a threat?

You think one of them killed Edwin Borstein,

one of the top engineers in the field,

and made it look like Bella did it,

all so they could draw attention to their cause?

A small-scale incident,

something to get the media chattering.

Feel free if you'd like to take a moment

to admire the beauty of this theory.

'Cause I've done so several times already myself.

It's elaborate.

But as a motive, it makes sense.

One of these people intercepted the package

from Michael Webb to Edwin Borstein,

and replaced the disk within it.

I've dispatched Kitty to Webb's apartment

to see if she can establish a connection

between him and one of our suspects.

In the meantime...

we wait.

You said you didn't set Andrew up

with your friend from Denmark.

I want to believe you.

Well, I encourage you to do just that then.

I want to believe you,

because if you did do it, if you still don't

respect the fact that I need my own space,

then I don't know why we're trying this again.

Watson, I have no inclination

to excise Andrew from your life.

Why would I?

I like the man.

Oh, you like him? Yeah.

You-you never told me that.

Why would I tell you?

To reassure that you've made a sound choice.

As one might reasonably expect a friend to do.

Right, right, oh, very well.

I like him.

He's intelligent.

He hasn't just jumped into a new business.

He has the patience and self-possession

to wait for something worthwhile.

And, most importantly, he understands you.

He understands you and me.

Wh-What do you mean by that?

I mean, Watson, that whether you care

to admit it lately or not,

I am an important part of your life.

And, whether I say it out loud or not,

you are an important part of mine.

My return to New York

was driven, in large part,

by desire to repair our relationship.

And I think, even though we might draw further or nearer

from each other depending on circumstance,

you and I are bound... somehow.

Andrew accepts that

without feeling needlessly threatened.

It's a rather enlightened position.

And so, no, I've got no desire

to banish the man to Scandi-bloody-navia.

Okay, I believe you.

Kind of feel like hugging you right now.

Yet, as my friend,

you know that would be a rash decision.

It's Kitty.

She says there's no connection she can find

between Michael Webb and one of our suspects.

In fact, she says his apartment is spotless.

Michael Webb strike you as the kind of man

to live in a pristine apartment?

No.

Seems like someone who'd be living

in the middle of a biohazard.

Yeah, I-I got an e-mail from a place called Clean This House.

They told me that a friend of mine entered me into a contest,

and I won a package of free cleanings.

Did you ever think to verify

that Clean This House was a real company?

Because they don't have a Web site.

It's a little

suspicious in this day and age, don't you think?

We think the person who killed Borstein

got into your place by telling you

you won free cleaning services.

Then they swapped the disc that you made for him

with one of their own.

So, do you recognize any of these people?

Ah, well, these people are all old.

The girl who cleaned my place was my age.

Are you sure no one looks familiar to you here?

Uh... hold up.

Her.

Yeah, that's her.

I'm positive.

Isaac Pike is a professor of computer science.

He's also a vocal alarmist

when it comes to artificial intelligence.

Pike was born with spina bifida.

Been confined to a wheelchair his entire life.

For obvious reasons, he could not have executed the plan

to pose as a maid, but his student...

Erin Rabin...

She's a graduate student in philosophy.

She took Pike's "Ethics of Technology" course last semester

and has been assisting him with his research.

She, no doubt, finds his ideas compelling.

Well, how do you know she was doing it for him?

She could've been working on her own.

She's a philosophy student.

She has no programming experience.

The virus that killed Borstein

is a cutting-edge piece of software.

We can place her in Webb's apartment

under false pretenses.

That, combined with the proven existence of the virus,

should be enough to get a friendly judge to give us a warrant.

Isaac Pike, Erin Rabin,

glad I caught you together.

Detective Marcus Bell, NYPD.

I wonder if you'd mind coming with me.

I have some questions for you

about the murder of Edwin Borstein.

Who's Edwin Borstein?

The man you mailed a computer virus

written by Isaac Pike to.

Sound familiar?

Isaac didn't write the virus.

I did.

I did everything.

It was all my idea.

You have the right to remain silent,

and refuse to answer questions...

We knew she might crack under questioning,

but did you think it'd be this easy?

I don't think catching both murderers

is going to be easy at all.

She's lying to us.

She intends to cover up for her mentor.

I picked Edwin Borstein as a target.

I went to the same Web sites he did,

figured out who he was corresponding with,

and then I wrote the virus,

posed as a maid, and had it mailed to Borstein.

You have zero programming experience

whatsoever.

You really asking me to believe that you taught yourself

to write a computer virus that eats itself?

If I give you a piece of paper right now...

...could you write a little program for us?

Erin was a conscientious student.

I know she took my work very seriously.

But I would never advocate harming somebody.

We're executing a search warrant on your computer, as we speak.

If there's any trace of that virus on there,

we'll find it.

Why are you making this

so easy for us?

Because I don't want you

dragging Isaac's name through the mud.

His work is too important.

None of us can afford for it to be interrupted.

So she's covering for him.

There's not much I can do... she confessed.

There's nothing tying Pike to the murder, other than you

saying Erin Rabin couldn't have written that virus.

Could we hold him overnight?

Maybe if we had a little more time...

The search warrant turned up nothing.

Erin confessed.

Unless something changes, the story she told us

is gonna be the official version

of Edwin Borstein's murder.

That was Joan.

She knows you won't come to the phone when you're...

like this.

She wants to come round and help.

That won't be necessary.

At times, Watson presents certain... moral guidelines,

and they can be an impediment to progress.

We're going to spend the rest of the evening

looking at the friends and family of Isaac Pike.

Why?

Erin Rabin is willing to spend her life in prison

if it means that Pike is free to continue working.

She's has made it all but impossible for us

to prove that he is behind the killing.

So we are going to have to settle for the next best thing:

getting him to admit that he did it.

Isaac Pike.

Sherlock Holmes.

We met briefly at the police station last night.

Mr. Holmes.

Do I need a lawyer?

No, you won't want her here for this.

You see, you and I both know that you are the mind

behind the murder of Edwin Borstein,

just as we both know that, as long as your student holds fast

to her story, I will never be able to prove your guilt.

That's a problem.

But not an insurmountable one.

You have a younger brother... Joshua.

He hasn't quite reached the heights that you have.

In fact, he's had some struggles, hasn't he?

Drugs, alcohol...

What's your point?

He's been convicted of two drug-related felonies.

And since he's made the mistake of living in Jersey City,

one more conviction makes him

eligible for a sentence of 25 years to life

under the state's horrific three strikes law.

My associate took some photographs of him

buying a rather large amount of heroin, just this morning.

Oh...

You want me to confess...

and, if I do, you'll-you'll-you'll

get rid of this folder full of blackmail.

I imagine you care quite deeply about your brother,

or you wouldn't have paid his way through rehab

half a dozen times already.

Take two hours to think it over,

and if I haven't heard from you...

I did a little research of my own last night.

I was curious why the NYPD

had a consultant.

You've got a very impressive record...

prolific, too... except for a couple of years ago,

when you suddenly disappeared for six months.

Six months... that's the length

of a very serious in-patient rehab.

A man of your unique sensitivities...

I'm sure it's tempting to dull

those senses.

My history has little to do with the matter at hand.

I think it may.

I think it unlikely that a recovering addict

would send another troubled soul to rot in prison,

just to have the satisfaction of putting away his man.

That would require ruthlessness,

a kind of... machine logic...

mm...

I'm not sure you have.

Not entirely, anyway.

Same kind of machine logic you used

when you murdered Edwin Borstein.

Some math equations

are more compelling than others.

Yours is a one-to-one exchange: my brother for me.

The equation you attribute to me

trades one man's life

for the chance to prevent billions of deaths.

You're talking about nothing less than

the survival of the species.

Surely that's worth compromising one's values for?

In any case...

I think you're bluffing.

You might want the world to believe

that you're an automaton,

a calculating machine...

but you and I know better.

Or we will, anyway...

in a couple of hours.

Hey...

I didn't see anything on the news

about Pike getting arrested.

Nothing about his brother

on the police band, either.

What happened?

He wouldn't confess.

And you couldn't turn in his brother.

We can still keep looking for a way

to prove that Pike did it.

The Property Clerk's Office called.

They want to know when they can come and pick up Bella.

I need a couple more hours with her.

Thank you.

Hey. Hey!

Wha...? I called to say bye.

You weren't picking up.

I wanted to surprise you.

You're great.

I mean, I knew you were great

but someone helped me to see how great.

Thanks.

So I called the airline,

and there are some empty seats on your flight to Copenhagen.

Listen... I don't want to horn in, if you're too busy,

and I can't stay the whole time but...

I've always wanted to see Copenhagen.

Bella...

...one member of a murderous conspiracy is in jail.

The second walks free.

The cost of catching him is incarcerating his brother

for unrelated crimes...

...crimes for which I, of all people...

should have some understanding.

Is it right to let the second murderer walk free?

I don't understand the question.

Can I have more information?

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