The Vampire Diaries

Previously on "The Vampire Diaries"...

Wes had this scheme to destroy vampires

by making them feed on each other.

- What's happening to you? - Karma is happening to me.

My name is Nadia Petrova. You are my mother.

This knife's the only thing that will kill a passenger.

I passengered myself into Elena's cute, little head.

She's acting strange. She kissed me.

Matt texted "help K," as in "Katherine."

Oh, my God.

You won't have to worry about me for much longer.

Tyler Lockwood bit me.

Good evening, sir.

If I could trouble you for a moment.

I'm looking for someone.

Her name is Katerina Petrova.

She was last seen outside of London in 1492.

She's on the run. I need to find her.

I need to ask her why she abandoned me.

Nadia?

Please. I need to know.

Nadia, I'm right here.

I'm right here.

Uhh. I was dreaming how I searched for you from village to village.

I know. I heard you.

You said that I abandoned you.

You were ripped from my arms as a baby.

It's completely different.

Not for a child without a mother.

You know, all this guilt is really taking all the fun out of

this mother-daughter outing.

I'm sorry Tyler bit you, but you're not going to die.

Did you ask Klaus for his blood?

Oh, my, you really are delirious.

Nadia, he would love nothing more than to watch my daughter die.

And you don't want to risk being outed.

No, I don't.

So, that's why I called him.

Nice to meet you. I'm Dr. Maxfield.

And luckily for us, he'll love nothing more than to study your blood.

Werewolf venom isn't easy to come by.

Get away from me.

It's ok. Nadia, it's ok.

Listen to your mother.

The venom in your blood is a toxin with basic chemical properties.

Once I study its make-up, I can... Create the antidote.

It's ok. Come on, come on, honey.

There you go.

If I'd known I just had to die to drag your attention from Stefan,

I would have tried it a long time ago.

If you're trying to make me feel guilty...

It's almost working.

I'm just glad you're here now.

Me, too.

I'm going to be a better mother, starting right now.

I promise you... I'm going to save your life.

she's brilliant.

We haven't noticed that Katherine's been inhabiting.

Elena's body for weeks, and that's all you have to say?

Yep.

And you realize that it was Katherine who

broke up with you, it wasn't Elena.

Mm-hmm.

Right. So, your little murder spree with Enzo where you killed Aaron,

you nearly killed Jeremy, tried to kill Wes but you got infected

with that ripper virus...

That was all you reacting to Katherine.

I'm trying to figure out why you decided to tell a starving,

bloodthirsty, vampire-feeding ripper that his Nemesis is still

walking around alive and well while I am stuck in this cell

and can't do anything about it.

I have it under control.

I'd love to hear this.

Hang on here. Katherine's still alive?

How is that even possible?

Remember that time Nadia's ex Gregor hitched a ride in your head?

Ok, well, it's kind of the same thing.

Katherine is a passenger in Elena,

except it's worse because none of us seemed to notice.

She was at my house.

How did none of us figure it out?

Because it's Katherine, and she's smart,

and conniving and sneaky and...

We're the worst friends ever.

This makes no sense.

She saved my life.

She gave me CPR when Enzo tried to kill me.

Katherine would never do that.

That's what made her so believable.

She played Elena to a t.

If she let you die, her cover was blown.

I was sleeping 3 feet away from her.

She picked out my bitter ball dress.

And I let her use my toothpaste.

Yeah, well, did she lure you into a hotel room to make out with you?

She's the reason I found out about you and Klaus.

Of course. Oh, my God.

So, how do we kill the bitch?

Well, passengers can be expelled from the host.

Saw it happen with Matt.

Gregor died and Matt lived.

All we have to do is stab her with a traveler knife.

I still have the knife that Nadia gave me.

Perfect. Go get it.

Hold on, guys, this is Katherine that we're talking about.

She's gonna see a sneak attack coming from a mile away.

We gotta get her to come to us.

Get her guard down. Corner her.

Fat chance you'll be seeing her today.

I'm pretty sure I bit Nadia.

What do you mean you bit her?

I mean she was attacking Caroline and I might've nipped her a little.

And you're just mentioning this now?

Hey, guys, focus. Tyler's right.

Katherine is not going to leave Nadia's side

unless not leaving compromises her identity.

Which means?

We gotta invite her to something that Elena can't say no to.

A surprise party? Seriously?

I wanted a spa day.

You try feeling the death of every

supernatural creature who passes through you

on their way to the other side.

I'm not saying you don't deserve it.

Besides, your birthday isn't until next week.

That's what makes it a surprise.

Yeah, I don't think Bonnie would want a big party for her birthday.

Of course she does.

So, when can you get over to Stefan's to help us set up?

I can't.

You can't.

I would love to, but I just... I can't.

Um... I'm making arrangements for Aaron Whitmore's funeral.

The only reason Damon killed him was because we broke up, so,

I kind of feel like I owe it to Aaron.

You understand, right?

Of course.

No, that's really nice of you.

Elena, you're so popular today.

Hey, Bonnie.

Hey. How's it going?

You sound tired.

Yeah. I had to pull an all-nighter for my sociology exam

and then woke up to a coven of

dead Russian witches passing through me on the way to the other side.

Sorry. Self-pity. So not cute.

No, I totally get it. You're the anchor now.

That must be... exhausting.

Do you want to maybe meet up for a coffee or something?

It's just been one of those days, you know?

Yeah. Well, ha!

This is gonna sound crazy, but I'm actually at the day spa right now

buying you a gift certificate for your birthday.

It was supposed to be a surprise but, well, surprise!

You read my mind. That's so you.

Hey, look, I'll check in with you later.

Ok.

Why are they being so clingy today?

What are you doing?

There you go. Drink.

I need more.

Too bad.

That was nothing.

That's exactly 4 ounces.

When you were out killing vampires,

you said one vampire kept you good for 8 hours.

So, our friend Caroline did a little bit of math... Caroline?

Relax. She had a calculator.

So, 4 ounces 3 times a day

should be just enough to help manage the hunger.

You mean manage me.

So you don't rip anyone's head off.

We'll deal with your crisis once we get Elena back.

I'll deal with my own crisis.

Listen, you just let me out of here.

I'll find Wes, I'll get the antidote.

And then what, huh? You skip town?

Leave it to me to tell Elena everything you did after you thought

she broke up with you?

Who are you calling there, buddy?

Katherine's been making a lot of excuses

and I have a feeling she won't be able to say no to me.

It's your phone. Elena is calling.

Answer it.

Elena. Hey.

Hey. Um... how are you?

Well, you know. Strung up, hungry.

Same old, same old.

Now that the dust has settled, I was hoping that, I don't know, maybe

we can talk about what happened at the farmhouse.

Can I see you?

Ok. Sure.

Why don't you just come to the house and we'll talk about it here?

Perfect. I'll see you soon.

Ok. Bye.

Damon knows that he tried to kill me less than 24 hours ago.

There isn't a single vampire-craving bone in his body

that would risk putting his precious Elena

back in that kind of danger again.

And yet he's desperate to see her.