Santiago Cabrera (Isaac Mendez) does not appear in this episode. Sendhil Ramamurthy (Mohinder Suresh) doesn't appear, but does provide the opening monologue.

Symbols: Matt and Ted both have marks on their shoulder.

We learn that Niki's doppelganger has a name - Jessica.

Ratings: 14.33 million viewers

Charles Deveaux: In the end, all that matters is love. I love you, Peter.
Peter: I love you, too, Charles.

Claire: (to Zach) You know, I get that you're socially slow but you know you're supposed to call someone before you come over?

Niki: (while looking in the mirror) Help me.

Simone: He said he's been flying all over the world. But that it was a world he didn't recognize, there were so many people filled with pain.

Simone: He worried for them... and for me... until you told him everything would be okay.
Peter: What do you mean I told him?
Simone: I know, it doesn't make any sense but he said that you were flying with him and you told him it was all gonna be okay. That there were people who cared, who would make a difference. That you would save the world.

Nathan: You're kidding?
Angela Petrelli: No, I never kid about family brunch.
Nathan: That's because we never have family brunch.

Lyle: Help! Somebody help me, my sister's a freak!

Micah: Heroes don't run away...
D.L.: Micah...
Micah: Bad guys do. Heroes help people, Dad. You know what? You're a bad guy.
D.L.: I'm not a bad guy, all right?

Niki: Then I would catch my reflection and... but it wasn't my reflection. It was... another me. She has a name... Jessica.
Texas Tina: Jessica?
Niki: When someone tries to hurt me, it's like she comes out.

Hiro: Why couldn't I have super strength too?

Micah: Dad, you saved her, like a real hero. Now, we can go back and save Mom.
D.L.: I wish it were that easy.
Micah: Well, it is, Dad, we just go back.

Lyle: I'm gonna put this thing on YouTube, make like a million bucks!
Zach: YouTube's free, you idiot!
Claire: You're not helping. Lyle, no-one can see what's on that tape.
Lyle: Are you an alien or something? Is he an alien, too?
Zach: Yeah, yeah, we're gonna... we're gonna anal probe you!

Audrey: Who keeps calling you?
Matt: Errr, nobody, it's my wife.
Audrey: Since when is your wife nobody?

Jessica: I said you can go now.
Texas Tina: It's me... I'm just trying to help you out, girl, okay?
Jessica: She doesn't need your help anymore. Understand?

Matt: How did he cause all that damage with his bare hands?
Audrey: How do you hear what people are thinking?

Peter: With this thing, we can make a difference.
Nathan: I'm... trying to make a difference, Peter, the best way I know how. Flying around, how is that gonna help anybody? What is it that... I can't... what am I... what am I gonna do when I get there? I don't have a gun, I don't have a badge, I don't know-I don't know karate! I guess I can put on a-a costume and-and fly around, pull cats outta trees! That's not gonna make a difference.
Peter: You're not gonna know until you try.

Micah: Mom, is this really you?
Jessica: Tell me where you are, baby.
Micah: Just put my mom on the phone.
Jessica: Your mom's not here right now. She's not coming back until I take care of a few things.

Mohinder: (closing voiceover) You do not choose your destiny, it chooses you. And those that knew you before Fate took you by the hand cannot understand the depth of the changes inside. They cannot fathom how much you stand to lose in failure...that you are the instrument of flawless Design. And all of life may hang in the balance. The hero learns quickly who can comprehend and who merely stands in your way.

Audrey says that CODIS determined the identity of a fingerprint found on a body. However, CODIS (Combined DNA Index System) uses DNA to determine an identity, not fingerprints. For prints, the AFIS (Automated Fingerprint Identification Systems) database is used instead.

During the last episode, "Better Halves", Niki was knocked out by D.L. and landed with her face toward the right. When this episode picks up where that scene left off, Niki is facing left.

Lyle: I'm gonna put this thing on YouTube, make like a million bucks!
Zach: YouTube's free, you idiot!

YouTube is a popular website where people can watch and upload videos for free.

Nathan's wife's, Heidi, condition was foreshadowed in "Genesis" by Angela and Peter.

Abilities Development
Micah Sanders: Micah has the ability of a technopath. He is able to work and fix technology by one touch of his hand.
Niki Sanders: Niki's doppelganger is revealed to be named Jessica.
Peter Petrelli: Peter experiences another dream featuring Charles Deveaux.
Ted Sprague: Ted releases radiation through his hands capable of melting solid objects at very high temperatures, but has a hard time controlling his power.