Original subtitles

Guess who?

Oh, John.

Sorry, babe.

I'm fine.

We'll get through this.

Yeah.

How many times did I tell you

she would've wanted the one from her PhD ceremony?

Honey, we talked about this.

And you're still wrong.

It's like you don't care what Aunt Trish would've wanted.

My sister's passing

was a profound and unseen tragedy

that will leave a hole in my heart,

in all of our hearts.

Thank you.

My daughter Lauren would now like to say a few words.

My aunt,

Dr. Larson,

was a brilliant mathematician,

teacher,

and my best friend.

Someday, I hope to follow in

not just her academic footsteps,

but those of her very personhood.

Mathematics reveals its secrets

only to those who approach it with pure love,

for its own beauty.

Archimedes said this.

But my aunt,

she lived it.

While many of you accept

that my aunt passed away from a heart attack,

I believe there's more.

And I won't rest until my aunt's murder is solved.

Lauren?

Mom, please stop, please!

Just go!

Honey?

I'm not applying.

What? Lauren, you have to, you've worked so hard.

No, someone has to focus on Aunt Trish's murder.

And apparently, it's not gonna be you.

Lauren, I know you're upset, we all are. Okay?

The medical experts determined it was a heart attack.

Get outta my room.

Go, get out of my room.

And that's why the derivative is defined

as the limit of the average rate of change

function over the tiny interval as it approaches zero.

And that's not just a mathemagical trick.

That's the very foundation of calculus.

The understanding of all this

helps us model the world around us more accurately.

And then we can begin to tackle problems

that we once thought to be insurmountable

because derivatives is your first step

in unlocking a universe of possibilities.

Questions?

Ah, one second.

I believe we have a special guest.

- Hi. - Hi.

Come on in.

Everyone, this is our guest speaker today.

She's an IMT student.

She's a PhD candidate at the mathematics program there,

and she'll be guest lecturing.

- Take it away. - Thank you.

Hi, everyone.

Until I earn the doctor title,

you can just call me Kristy.

It's so nice to meet you all.

Who can tell me the difference between

integral calculus and differential?

Good, got a couple hands here.

Come on.

Yes, you. What's your name?

Lauren.

Nice to meet you, Lauren.

What do you got for us?

Integral calculus focuses on the concept of an integral.

Which is?

Which is essentially the opposite of a derivative.

An integral can be viewed as an accumulation

of quantities over a continuous interval.

Differential calculus focuses on

how those quantities change over the same interval.

Nailed it. Well done.

Okay. Who is up for a challenge?

Yes, Mrs. Swanson here.

I'm following up on Dr. Larson's research journals.

Right. Dr. Teller is very busy this week.

I understand. I can come in right now.

All right.

Thank-

That information is privileged.

They aren't helping anyone in a box.

The university has rights to them.

They'll be in the mathematics library after processing.

Archimedes' Alcove.

I, I used to bring Trish lunch.

We'd eat on the steps during her break.

That library is off limits to the general public, you know.

I never went inside.

Precisely.

I just want the journals for my daughter.

We can make copies for the university.

Your sister's research has massive implications

for the public and the private sector.

It was developed while she was an employee of IMT,

her journals therefore remain the property of IMT.

The answer's no.

Respectfully, I cannot accept that answer.

Respectfully,

I suggest you talk to a lawyer, Mrs. Swanson.

The journals stay here.

Is there anything else?

No.

So how was your day today?

Fine.

It's nice to spend some time together.

Forcing me to go grocery shopping with you doesn't count.

Right. Okay.

You know, I think if we sat down

and really had a conversation-

If we sat down and had an actual conver-

We need to fix this.

I looked into it.

Do you know that you and dad don't have a single

family member who's died of heart failure?

Aunt Trish ran marathons.

She ran marathons.

Why aren't you looking into her murder?

Yeah. Great talk.

Kristy.

Hi!

- Lauren, right? - Yeah.

What did you think of that podcast?

Oh, oh yeah, I loved it.

Hi, Kristy Warren.

I was a guest in Lauren's calculus class today.

Yeah, she's a PhD candidate at IMT.

Oh, well, it's so nice to meet you.

I'm Helen Swanson.

And that's, that's wonderful.

My sister was, my sister actually got her PhD from IMT.

Really? That is a tremendous accomplishment.

Did you know my aunt? Dr. Larson?

Everyone did.

I am so incredibly sorry for your loss.

Thank you.

I specialize in number theory.

Yeah, my aunt, she studied the Lorentz Factor.

Chaos Theory.

Real life implications of the butterfly effect.

Yeah.

She knows, she's a math expert.

Very important research,

but an entirely different world from mine, though.

A lot more physics.

I'm sorry, but your card was declined.

I ran it twice.

Oh, um.

You know what?

I'll just, I'll put these back.

I've got this.

- No. - No, no, no, no.

It's no trouble.

I know how little they pay you guys in those programs.

There were many days I'd have

to bring my sister to lunch from home.

Thank you.

Thank you.

See you, Kristy.

Thanks again.

Kristy.

Yeah?

Would you, would you like to come over for dinner tonight?

Yeah, I'd love that.

I'll just, I'll follow you? Okay.

You know,

Lauren is unique.

She doesn't have or want any of those social media accounts.

Yeah. I, uh,

I have no interest in becoming a zombie slave

dependent on likes for happiness.

That is so refreshing.

So many people think technology is the greatest thing

to happen to us, particularly in the field of mathematics.

But I just don't think that's the case.

Well, what do you mean?

Well, take AI for example.

There are those that believe it's become so advanced

that we can skip over the very basics of math

and go straight to more advanced curriculum on computers.

But in doing so, you lose the love of math,

the desire.

You need people to sit down with pen and paper

and get into the rhythm inherent in learning,

both the struggle of it and the joy of it.

You have to feel it.

I mean, I think that's why

most of the greatest mathematicians

still solve the equations with chalk.

There's an art to it.

It's a dance, really.

Ah, see Lauren?

I teach dance.

I run a studio off third street with John's mom.

Oh, Danceworks. I've driven by there many times.

Well, come stop in anytime.

I'd be happy to give you a membership.

I'm not very coordinated, but I'd love to,

I'd love to try.

I'm always telling Lauren that her love for math

isn't all that different than my love for dance.

Albert Einstein once said,

"Pure mathematics is in its way

the poetry of logical ideas."

One could argue that dance is a sort of poetry.

And through the law of logical inference-

If dance is poetry.

- And poetry is math. - Then math is dance.

What a team.

You remind me so much of my aunt.

Well, I think that's just because

math was both of our first languages.

You seem to have a very close-knit family.

That's special.

And what about your family, Kristy?

Are they around?

I was actually given up for adoption when I was a baby.

I spent time in and out of foster care until I aged out.

Graduated from that.

I'm so sorry to hear that.

No, it's okay. Everything happens for a reason.

I think that's why I gravitated towards math.

You can trust it.

Numbers don't lie. Just people.

Hey, um, would you be interested in becoming

Lauren's tutor?

She's applying for the IMT Youth Math Summit.

Oh, uh-

That is a big one.

That can really bolster your chances

of getting into the right college program.

And of course, we'd work around your academic demands

for your PhD program.

That'd be great.

It would be a pleasure to work

with someone as driven as Lauren.

Oh, your mother.

Hey, tell her I'll call her..

I'm so sorry.

I have to, I have to take this.

She doesn't take kindly to not being answered to.

That's for sure.

That's okay. I should probably get going anyway.

I'll see you soon.

This is great.

You know, actually, can we, can we start tomorrow?

Yes, we can.

Deal.

- Can I put this in the- - Oh, no, no, no, no.

I got it.

What?

Hello, who are you?

Could you come over to dinner every night,

because I really don't know who that is.

Don't get used to it.

I'll walk you out.

Uh-

- Sorry. - No, no, no.

Here, let me get that.

Have a good night.

Yeah, you too.

Hey.

Lauren wants me to keep looking into Trish's death,

but there's nothing else to find.

I know.

You did good today.

Really?

Yeah. This tutor's gonna be great for her.

Thanks.

You're a great mom.

Oh, I'm not so sure about that.

Oh, I am.

John, stop.

Kill me, okay? I want my wife.

- Really? - What?

Kill me? Really thoughtful word choice.

Okay, well, it came out-

Yeah, well, you think you can be a little more sensitive

to what I'm going through?

- Seriously? - Yes.

I've been nothing but sensitive.

I'm sorry.

Helen.

Helen.

- Trish. - Helen.

Helen.

Helen?

You okay?

I'm fine.

John, can you get that?

Yeah.

- Kristy. - Dr. Swanson.

I'm actually an ER nurse, but

Dr. Swanson sounds like it'd be a great soap opera name,

right?

It does.

Come on in.

Long trip?

No.

How was the drive?

- It wasn't bad. - Dad.

Dad. We have work to do.

Okay.

I think I might need some help on related rates today.

I don't know, I kind of just

always have some struggle with them.

Morning, Kristy.

Hi. How are ya?

Hey, can I grab a cup of coffee?

Oh yeah, sure.

So this, so every time I like try to complete

the following limit using the properties of limits..

- Sorry about last night. - Me too.

I want to take you to dinner.

Our spot.

- Mm. Our spot. - Yeah.

I'm done teaching at six.

All right. Then I'll make a reservation for seven.

Thank you.

It's almost like the problem is like-

Pretty girl.

Like every time I go-

So nice.

What?

Oh, uh, nothing.

All right. Let me see your work on this.

Yeah, I'm just not so good at these.

I don't know, it just never clicks.

Bye girls. Be back at five.

You know what?

Grab your stuff. Let's go outside.

Outside?

So, what are we doing?

Ah, there she is.

Who?

All right, now your turn.

Go on.

Okay.

Nice. All right.

What do you see?

- Our shadows? - Mm-hmm.

Related rates are all about

how one thing changing affects something else.

I'm gonna do another cartwheel.

Probably even worse than the first one,

but I want you to pay attention

to my shadow and the length of it.

Okay.

Okay. So did you see how my shadow changed as I moved?

It was longer when I was horizontal

and it was shorter when I was vertical.

So the rate at which your shadow changes-

Go on.

Is just related to the position

of the sun and my movement.

Exactly like the rate of this variable

in relation to the change of this-

One.

She's my best friend.

When I lost her, it was,

it was like I lost the only person that got me.

I'm so sorry, Lauren.

My mom doesn't understand my passion for math at all.

She'd much rather I opt for curtsies over calculus.

Nutcracker over numbers.

Those were pretty good.

I guess.

Look, even if you and your mom have different passions,

she does seem to care about you a lot.

She was this professional ballerina.

When it became clear that I didn't have the

aptitude for that, it was like

she didn't care about anything else I was into.

I see.

I think someone murdered my aunt.

Murdered?

Yeah.

My parents are so quick to move on.

But a freak heart attack?

Like it just, it doesn't feel right to me.

What about her journals?

Exactly.

I mean, everyone in high level academia knows

that a research professor's journals are sacred.

They're always a mix of professional discovery

and personal inspiration.

In your aunt's case, a trove

of potentially lucrative and meaningful knowledge

for future generations and mathematicians.

Yes!

Well, as family, you'd certainly have a claim on that.

I'm sure your mom is already on that, though.

No.

That's surprising because-

What is it?

Well, if there's any suspicion

over the cause of her death,

I'd think that'd be one of the first places they'd look.

What do you mean?

Maybe someone was after her research.

I'm not saying that's what happened.

It's just a wild conjecture.

Even just to preserve her legacy,

I think they would want them.

It doesn't make any sense.

They just want me to move on.

- You know what I think? - What?

I think

we control the variables we can right now.

- Yeah. - Yeah.

I think the best way to honor your aunt

is to keep pursuing your dreams.

Get into that IMT math camp.

Yeah.

I know that would make her proud.

What we're working on here, you and I,

we can get that, right?

Now, let's go inside

and solve some more of those derivatives.

You know, I do wonder if she's right.

You know, if there's more.

You let the professionals do their job.

They did their job. Their job is done.

My sister's passing is hardly a job, Susan.

All I'm saying is what's done is done.

You need to focus back on your job.

As a businesswoman, a mother, a wife.

Right.

You know what my mother used to tell me, dear?

Life is for the living.

Now, let's focus up, shall we?

What?

We need to raise our price of private lessons

by at least 15%.

Potentially.

Oh, that reminds me.

I wanted to tell you, there's this young woman,

Lauren's math tutor, she'll be joining.

Great.

I'm not so sure we should charge her.

Don't be ridiculous.

It's not ridiculous.

Shoot, I have to run home before my next class.

Let's talk about this later, okay?

Thank you for the coffee.

They just don't understand these math jokes.

I know!

Hey, they're very silly.

I mean, why did the math teacher start wearing glasses?

To improve his long division.

That's actually a good one.

I thought so.

So how'd it go?

Yeah, it went great.

Are you guys all finished?

Yeah, she has a few more problems to solve,

but I think she knows what she's doing.

- Yeah. - Okay, well,

I am off to ballet class.

Do you need anything else?

Actually, I'd love to take you up on

that studio membership you offered.

I could even take a class tonight.

Yeah, of course. We can carpool.

I know Lauren can be a lot. Thank you.

Oh, no, it's fine, really.

You know, ever since my sister passed,

I've felt so disconnected from her.

Feels like she's so far away from me.

Like she's,

like she's not even my kid.

I keep trying to understand her better,

but every time I do, she just, she pushes me away.

Well, she has a very bright spirit.

Thank you.

I don't mean to drag you into all of our family drama.

Grief isn't drama.

When you lose someone you love, it's,

it's like being handed the most

insurmountable equation.

You never really thought you'd see,

I mean, you knew it existed,

but you never thought you'd be the one solving it,

especially not at the time that you are.

Yeah.

Exactly.

If you can manage to

view your grief as an equation,

you might be able to take

better charge of your healing.

How's that?

The pain, the sadness you're feeling is actually,

it's actually a lot like the confusion you feel

when you first look at a new math problem.

But you break it down into more manageable parts,

and then every day you solve a small piece of that,

that larger grief problem.

Who knew you'd be playing therapist

and math tutor all in one?

We need to pay you more.

Oh, no, it's okay.

Can I get your opinion on something?

Yeah, of course.

I'm in a bit of a battle with your university

to get my sister's research journals back.

- Oh. - Yeah, I know

Lauren would really treasure them.

Yeah, of course.

The school keeps claiming that they have certain rights

to them, but it's not just her work, you know,

it's her voice, her legacy.

Honestly, that doesn't surprise me.

- Really? - Yeah, there's so much

to that side of universities.

There's such a dirty underbelly to the profitability

of a research professor's discoveries.

And not even just theirs,

the discoveries of the PhD candidates

under their supervision.

It's really this, this vicious circle

of very stressy intellectuals with a lot to prove.

Yeah. Yeah, I mean, the fight is going nowhere.

I keep coming up against a wall,

and now I'm being told to lawyer up.

Oh.

Yeah, I haven't involved Lauren with any of this.

John and I, we think she deserves the space to heal.

You know, to not have her aunt's passing be diminished

by the bureaucracy of university politics.

That makes perfect sense.

I do agree you have to keep fighting

for those research journals, though.

I mean, you said it yourself, they're her legacy.

What could be more important than that?

Yeah, you're right.

Yeah.

Wow, this is such a beautiful space.

Hi, I'm Kristy.

Hi. May I help you?

Kristy is going to take my class tonight.

We'll go over the membership details later.

I don't understand why we're giving out

free memberships like they're candy.

Why don't you go claim a cubby?

Are you sure? I don't wanna cause any trouble.

I've got this.

Kristy's been helping your granddaughter.

She's been working with her. It's the least we can do.

It just sets a bad precedent.

This is a business, not a charity.

It's also about community, Susan, family.

She's been helping your granddaughter.

All right.

But just remember, this is my studio too.

And rent isn't free.

Understood.

Fine.

Okay, everybody, let's get up

and work on our tendus at the barre.

Do you wanna join us?

No. I'll just watch this one.

Okay, everybody.

5, 6, 7, 8.

One, two.

Okay. Great work today, everyone.

I'll see you next week.

That was so impressive.

Yeah. They're a strong class.

No, I meant you.

I don't know about that.

Okay, okay.

So their plies looked like a diamond.

Mine is more of a trapezoid.

What am I doing wrong?

Okay. It's better

if you just line your joints up safely first like this.

Good, good.

Oh, am I still doing it wrong?

No, no. Not at all.

How about a little ballet 101,

just so you feel comfortable jumping

into class If I'm not around?

Yeah, that'd be great.

All right.

Let me turn on a little music here.

Okay. Let's get back to the barre.

Right.

Okay.

And relax.

Breathe. Breathe. Breathe.

And out.

Good.

Five, six, seven, eight.

Where'd the waiter go?

Thank you.

I really needed that.

Yeah, me too.

- Well, goodnight. - Goodnight.

I'm home. Lauren?

Yes, I'm Dr. Patricia Larson's niece.

Yeah, I'm just calling

to confirm my appointment for tomorrow.

Right, John.

John?

Yes. Great. Thank you so much. I'll be there.

All right.

John.

And I am not a huge fan, actually.

Where'd the waiter go?

You've reached John, please leave a message.

Kristy?

Mr. Swanson.

Oh my God.

What are you doing here?

It is actually a gross miscalculation

that all studying must take place in libraries

and coffee shops.

I get it.

Can I...

Oh my God, please.

When I was in pre-med, I also preferred working

in noisy places.

Chaos felt, it felt normal.

Exactly.

- You get it. - I do.

Chaos theory.

Chaos theory is a branch of mathematics

that focuses on complex systems

that are sensitive to initial conditions.

Most people know it as the butterfly effect.

Right.

If you, if we both had these loud, noisy upbringings,

then maybe those are the initial conditions

that would someday lead us

to be the kindred spirits studying at bars.

It's pretty cool.

An ER nurse. That is pretty cool.

No, you must work some wild hours.

Well, they could be long, that's for sure.

Are the shifts pretty predictable?

They can be longer depending on the needs.

Generally, I cycle every other week

between night and day shifts.

That must be really hard on your sleep schedule.

I'm a bit of an insomniac.

Trying to convince my brain to switch

from being a night owl to an early bird is a-

A balancing act.

Exactly.

Next Friday, I'm working days the whole week.

And that's pretty good,

'cause then I can be home to cook for the fam.

Oh, that is so sweet.

Speaking of family, where is Helen?

Is she here?

Helen?

Yeah, well, Helen stood me up tonight for our date.

And I'm here pouting like a little baby.

Oh no.

What?

That is on me.

She was at the dance studio with me.

She stayed after her class to teach me.

I am so sorry.

No, don't be. You didn't know.

Yeah, but I still feel bad.

No, don't worry.

What did you do,

bring the whole library with you?

Just about.

I'm in a tough spot.

I was this close to publishing my theorem

when my advisor took all the credit.

So now I'm back to square one,

scrambling for a breakthrough.

Oh, that's awful.

Yes and no.

I don't mind the work.

Math is my life.

Without it, there is nothing else.

There is no one else.

That's hard to believe.

Um, we really appreciate you working with Lauren.

She really likes it, and she's doing really well,

so thank you.

Mm-hm. You're welcome.

Right.

Well, I'm gonna let you get to it.

Okay. Good night, John.

Goodnight, Kristy.

John?

John?

Oh, God.

- Hey, John. - Hey.

- Forget something? - Oh, thank you.

Can't get a rideshare without this.

No problem.

You okay?

Yeah. Yeah.

I've just,

I've had this really uneasy feeling lately

that somebody is following me.

Really?

Silly, I know.

No, no, it's not silly.

Is there anything I can do?

No. I'll be fine.

You sure?

- Yeah. - Okay.

They are so lucky to have you.

Helen?

In here.

Glad to see you made it home.

Seeing how you missed our date.

Seeing how you were just on a date,

I'd say you don't have a leg to stand on.

What are you talking about?

Really, John?

I just saw you in the parking lot

of the Hidden Oak with our daughter's tutor.

What? Were you spying on me?

Oh, come on.

You literally left a note saying where you were gonna be.

What if I was coming to see you to spend time with you?

Were you?

Or were you just checking on me?

I can't believe how inappropriate this is.

You missed our date

'cause you were spending time with Kristy.

Now, I was doing the same thing,

by accident, mind you.

And now I'm the bad guy.

Please. It is in no way the same thing.

Oh my God. Of course it is!

John, you can't see how you at a bar

with our daughter's tutor's different than what I was doing?

Nothing happened.

Not what it looked like.

Okay. What did it look like?

I saw you two in the parking lot.

Okay, I left my phone inside the bar.

She came out to give it to me.

I can't believe this.

I am calling Kristy.

I do not want her around here anymore.

Stop it.

Why can't you two just act like adults?

Sweetie-

No!

You wanna take away the one good person in my life,

just because you're such a horrible one.

Lauren, do not talk to your mother that way.

I'm not wrong.

You don't even care that Aunt Trish is dead.

Lauren!

I wish it was you instead.

Come in.

Hi, Dr. Teller?

I'm Lauren Swanson.

Yes, I know who you are.

Thank you for meeting with me.

Please, sit.

So, I wanted to talk a little bit

about my aunt, Dr. Patricia Larson.

You were fellows here for nearly eight years.

Were you close?

This is not a sorority, young lady.

Of course. No.

I'm just very curious about her work here.

Sure you are.

Sir, I'm actually exploring this career path myself.

The people that knew Dr. Larson the best

were the PhD candidates who worked under her supervision.

Perhaps you should talk with them.

Great. Okay.

Where can I find a directory of these candidates?

If I give you this information,

can we agree that this will be the last visit

from the Swansons?

Swansons?

Yes.

Yes.

Candidates are arranged by faculty sponsor.

Thank you very much.

All right, perfect.

Thank you. Thank you so much.

Mm-hm.

All right, I'll let you get back to it.

Mm-hmm.

You've reached the phone directory

for Dr. Larson's PhD candidates.

Press one for Duke Tanner,

two for Noah Thompson,

three for Kristy Warren,

four for-

Kristy?

Hey, you.

What are you doing outta school so early?

What are you doing here?

My aunt was your supervisor?

I can explain.

Walk with me?

I didn't mention working with your aunt

because I didn't wanna upset you or your family.

This is pretty upsetting.

Meeting you felt like this beautiful coincidence.

And then it started to feel like family.

Family?

Yeah.

Have you ever heard of the birthday paradox?

No.

It's a lot like our meeting.

In a room of just 23 people,

there's a 50% chance

that two people will share the same birthday.

It's all about these meaningful connections

in seemingly random situations.

Like us?

Solving Aunt Trish's murder.

Exactly.

I believe we're meant to uncover the truth.

But your mom, she's struggling.

I'm afraid that adding any extra stress

to whatever else she's already going through

is just gonna push her over the edge.

Yeah.

The other day in the car, she was telling me

that she felt really disconnected from you.

And that-

And what?

She doesn't even feel like you're her daughter.

I mean, I'm sure she didn't mean it like that.

We don't need her.

[door thuds

Oh, Trish.

Hey.

Hi. I am so sorry about that, everyone.

Gimme one moment.

Okay.

Let's begin.

First position.

And second position.

Third position.

Five, six, seven, eight.

One, two, three, and four, and five, and six.

And eight.

Good.

Third position.

Fourth position.

Great.

One two three four

five six seven eight.

Nice work ladies. I'll see you in a couple days.

Whew. That was incredible.

I have been in research mode for the last eight hours

and it just felt so good to get out of my head

and into my body.

Happy to hear it.

Is everything okay?

Did I do something wrong?

Yeah, I saw you.

I saw you with my husband at the bar last night.

Oh my gosh.

And I don't mean to sound paranoid,

but it looked like something was going on.

Helen. Helen, no.

Absolutely not.

Okay, it was complete coincidence

that we were both there.

I've studied there for years.

Okay, you can even ask the bartender.

It's just, it looked,

I saw you together in the parking lot.

The truth is, I've been terribly afraid lately.

Afraid?

I have this feeling that somebody is following me,

somebody is stalking me.

And I know,

I know that somebody came into my research lab,

came to my station,

and they moved my things around.

I told you, this program is so, is so competitive.

And I think somebody, I think somebody is after my work

and I think they're after me.

- Okay. - And I think

I just hugged him

and I was scared and I didn't mean anything.

- I'm sorry. - It's okay, Kristy.

It's okay.

I have, I have no one.

I have no family.

I am beyond grateful

that you have so graciously welcomed me into your home.

And this opportunity with Lauren?

I would never jeopardize that.

Okay.

Yeah, of course.

I am so sorry.

I didn't mean to jump to conclusions.

You're such a good mom.

It's okay.

Sorry.

I'm on a deadline, so I never know...

No, no, no.

What am I gonna do now?

What's going on?

The pipes burst in my apartment complex.

I have nowhere to go.

You could stay with us.

Thank you so much.

Yeah.

Listen, I have to pick Lauren up from school

after I'm done cleaning up here.

But John should be home in like 20 minutes

if you need anything before that, okay?

Great. Great. Okay.

I'll see you soon.

Okay.

Helen?

Helen?

Helen?

I'm sorry! I'm sorry! I'm sorry!

What are you doing in here?

Kristy, what's wrong?

I don't know.

I just, I turned around

and all of a sudden he was grabbing me, and kissing me...

- What? No. - I'm sorry.

I can't stay.

Dad?

Lauren, listen.

Let me explain.

Okay?

- No. - Lauren!

- How could you? - What did she say to you?

Listen, you have to believe me.

This is not what it looks like.

Okay, she's- Get off me!

She set me up. Okay?

I can prove it. Look, there's a note.

There was a note right here.

She took it with her.

John, I think you should go.

You really don't believe me?

I've always put this family first.

And have I ever given you a reason not to trust me?

Get out.

Go away.

Lauren, please. I just wanna talk with you.

Just leave me alone.

Please, honey.

Please, just give me a minute, okay?

Please, Mom, just go.

Just go away, okay?

Honey, please.

I don't wanna talk with you right now.

Please, just go away.

Just go away.

Okay, just gimme a minute.

- Excuse me. - Hi.

I'm gonna need to scan your membership card.

Oh, I just need to grab a few of my things I left here.

I won't be returning.

I don't know what game you're playing,

trying to hurt my son, but mark my words,

you're not gonna get away with it.

I have no idea what you're talking about.

Unless of course you are referring

to your son, John, assaulting me.

In which case, I know exactly what you're talking about.

Get out of my studio.

Check this out.

What is it?

You'll see.

My student code is basically a butterfly pattern.

Remember this, and you always find your way in.

I love that.

Okay. Open your eyes.

After you.

Welcome to Archimedes' Alcove.

This place is pretty special.

You can come here whenever you feel unsafe

or need to escape or just study.

There's no service here, so there's no distractions.

I have to submit a grant application.

It's just here on campus, so it shouldn't take too long.

But there's been a bit of a submissions backlog,

so it might take longer than usual.

I'll be back in an hour. 90 minutes tops.

Yeah.

That's fine.

Kristy?

Yeah?

Are you okay?

You just didn't say anything in the car.

I'm really sorry about my dad.

Yeah, no, I'll be fine.

Are you sure?

I think the healthiest thing for me

to do is just throw myself back into my work, you know?

I'll be back.

- Good night. - Good night.

Sarah?

Sarah?

John?

No, no. I'm sorry, ma'am.

This is a crime scene.

This is my place... Where's my mother-in-law?

John?

It's my wife.

Ms. Swanson, I'd like to ask you a few questions.

That's my husband over there.

We spoke to him already.

I'd like for us to talk.

Yeah. Okay.

Would you like to speak here or down at the station?

That's fine.

Follow me this way. Watch your head.

Can you tell me where you were tonight?

At home, but I was alone.

Okay. Can anyone confirm that?

Hey.

This place is amazing.

You know, I actually could really

hear myself think for once.

In fact, I actually think I solved the equation

that you brought to my class.

That's great.

I got us some snacks.

You wanna enjoy these?

We can sit outside and you can tell me all about it?

Yeah. Sure.

Great.

I love this place.

It's really cool.

I don't know, I just haven't had so much peace at home.

- You know, Delta X1. Delta X2. - That's awesome!

It just kinda just started to make more sense.

So, what else did you discover?

Ah!

Oh, shoot. I'm sorry.

Phone's going crazy.

Is everything all right?

Lauren?

My grandma's dead.

Oh my gosh!

I need to go to the police station.

Can you please take me?

Yeah, yeah.

Of course.

I'm so sorry. I don't...

No, no, no. I'll drive us.

This way.

We didn't get along perfectly, no,

but I have no idea who did this.

Mm.

Come in.

We were studying together.

We didn't have service.

I'm so sorry. We came as fast as we could.

What happened?

That's what we're trying to figure out.

Are you family?

No, but I'm here for whatever you need.

Thank you.

Have a seat, young lady.

Officer?

Yes, ma'am?

I do actually have some information.

Have a seat.

I'm sure he'll speak with you next.

Thank you.

We also recently suffered the loss

of my sister, Lauren's aunt.

We've been through a lot lately.

And now this.

I'm sorry to hear that.

May I ask what happened to her?

- She was murdered. - A heart attack.

I see.

We will be in touch, Ms. Swanson.

Again, I'm sorry for your loss.

Thank you.

I'll see you in my office now.

Lauren?

Lauren?

Lauren!

When I first got to the dance studio,

there was a lot of tension between Helen and Susan.

They were fighting about something

and it seemed like they fought often.

Go on.

Here.

Thank you.

What is it?

I think, I think you need to look into Helen Swanson

for the murder of her sister Trish as well.

Dr. Larson.

That is a very serious accusation, Ms. Warren.

I've been spending a lot of time with Lauren recently,

and I've seen it.

I've seen her jealousy of Trish

and Lauren's relationship.

Jealousy?

I think, I think Helen always felt overshadowed by Trish

and it all just became too much for her.

Is that so?

When I think back to all the times

that Lauren expressed to me Helen's dismissiveness,

even heartlessness, concerning Trish's passing.

Every time Lauren wants to investigate-

What's your connection to Dr. Patricia Larson?

She was my mentor.

My direct faculty supervisor in my PhD program at IMT.

Mm.

But really, she was like a mother to me

and losing her has been unbearable.

But now I'm just concerned for Lauren.

I fear for her safety.

Helen is not a well woman, and I have seen it firsthand.

Okay. Okay.

Well, we will look into all of this, Ms. Warren

Just take a moment, okay?

This is Lauren.

Sorry. I'm probably solving derivatives right now.

It can't be.

Mrs. Swanson?

John's not here. Is everything okay?

Yeah.

I need a favor though. It's urgent.

I am so sorry to have

to tell you all this about your mom, Lauren.

No. How could she do that?

She killed Aunt Trish?

I know. I know.

It's horrifying.

Lauren. Lauren, look at me.

You and me, we can be like a family.

We don't need her, right?

Right.

Yeah?

We need to get out of here.

Get out of here?

We can run away together somewhere safe.

Okay.

Yeah. Okay.

But first, first we need something.

What?

We need those research journals.

I don't know where they are.

That's okay. That's okay.

Maybe they're here.

I don't know what they look like.

Can you help me look for them?

Yeah.

Yeah. Atta girl.

Come here.

- Butterfly effect. - Butterfly effect.

Archimedes' Alcove.

Archimedes' Alcove.

Lauren?

Lauren?

Mom, stay away from me.

- Stay back. Stay back. - No, no, no, no, no.

- No, you don't understand. - No, I know what you did.

I know what you did.

- It is not safe here. - No.

Okay? We have to go.

Kristy?

What are you doing?

Okay.

Tell her what you did, Helen.

Tell her how you killed your only sister

and the only person that ever felt like family to me.

Family?

She was my research professor.

- Kristy. - For years.

Kristy, I thought you said you studied number theory.

Okay, that would've been under

an entirely different department,

a different research professor.

I lied about that,

but only because I was grieving her loss

and I was afraid that someone might come after my work next.

Okay. Yeah.

Your work.

Trish's latest published paper.

I don't remember her mentioning you.

I didn't understand it all,

but there was only one name on that paper.

Her newest theory.

She said it was gonna be groundbreaking.

It was.

Well, she was a brilliant-

I'm brilliant!

That was my discovery. Me!

No, no, no, no, no, no.

There was only one name on that paper.

It was Trisha's.

Shut up!

Okay. Okay. Okay.

I can't imagine what that must have been like,

feeling so slighted by someone who felt like family.

- I said, shut up! - Not having your life's

work recognized.

Not having that safety, that love.

She was everything to me.

She was all I had,

and she betrayed me.

She took credit for my discovery!

Okay.

I deserved to be published.

I was ready.

Okay.

So you killed her?

It was an accident.

I thought I did it right.

I thought the toxic coating I put on her chalk

would be diluted enough with water

that it would just knock her out just long enough

for me to find her journals.

But she never woke up.

I miscalculated.

I thought I could pin everything on you,

but everything just gone completely out of control.

And Susan?

Yeah.

Kristy, okay.

Okay. Come on. Come on.

Why don't you just put down the gun?

No!

Wait, wait, wait, wait.

Where are her journals, Helen?

I know you have them.

I don't. I swear, Kristy.

Okay, I have been fighting for them myself.

- You know that! - Liar!

Okay. Okay. Okay. Hold on. Hold on. Hold on.

What are you doing? Stop!

- Stop. - You have

to see something, Kristy.

Please, please, please, please.

Here.

Put it on the table.

Put it on the table and get back!

Get back!

What?

This isn't real.

Numbers don't lie.

Just people.

I'm so sorry. I'm so sorry.

You're my aunt?

I had no idea.

Please, Kristy.

Which means I killed my mom?

Okay. Okay.

Listen, my sister was very devoted to her academic career.

Okay, her choice

to give up her baby was excruciating on her, though.

I am sure she had her reasons

for not citing you in that paper,

because she always wanted to push people to be their best.

No one else in this family has to die today, Kristy.

Okay. Just please, please, please,

just put down the gun.

No! No!

This is all your fault!

You could have stopped her.

You could have made her change her mind.

You could have made her not give me up!

I called the police.

It's over, Kristy.

I'm so sorry, Mom.

Me too, baby. Me too.

Are you guys in line?

No, go ahead.

Hi, checking in?

Yes, Lauren Swanson, please.

Lauren Swanson.

Welcome Ms. Swanson.

Thank you. Thank you.

I did it.

I love you.

Oh, I love you so much.

I'm gonna miss you.

I'm so proud of you. I'm so proud.

Guess I better get going.

One more thing.

Aunt Trish's journals?

I need to solve my own equations first.

I think that's what Aunt Trish would want.

I will keep them safe for you.

Thank you.

I love you guys.

I'll see you soon.

Pretty girl.