Henry Ian Cusick and Michael Emerson join the main cast after their guest star stints during season 2. Other new additions to the main cast are Elizabeth Mitchell, Kiele Sanchez and Rodrigo Santoro.
Only five of the main cast feature in this episode: Michael Emerson (Henry Gale / Ben), Matthew Fox (Jack), Josh Holloway (Sawyer), Evangeline Lilly (Kate) and Elizabeth Mitchell (Juliet).
When Jack checks his pager, the time is 7:15:23 AM.
The Dharma station that Jack is being held in is called the Hydra.
Jack graduated medical school a year faster than anyone else.
Ben: Goodwin. You see where the tail land?
Goodwin: Yeah, probably in the water.
Ben: You run and you can make that shore in an hour. Ethan, get up there to that fuselage, there may actually be survivors. You're one of 'em. A passenger, you're in shock. Come up with an adequate story if they ask. Stay quiet if they don't. Listen, learn, don't get involved. I want lists in three days. Go.
Mr. Friendly: Rise and shine, Kate!
Kate: Where am I?
Mr. Friendly: You don't really think I'm going to answer that, do you?
Sawyer: (to the prisoner nearby) Hey! Where are we? Who the hell are you? Oh, you ain't gonna talk to me? What? Ya got more important things to do?
Karl: I wouldn't do that.
Sawyer: I want your advice, I'll ask for it! (pushes the button and gets thrown across his cage) Son of a bitch!
Karl: Told you.
Jack: (to Sarah) Just tell me what his name is! I wanna know... who he is. Look, you can have everything - the cars, the house - I don't care, I just... I just want to know... the name of the man that is with my wife.
Jack: TELL ME WHERE MY FRIENDS ARE!
Juliet: I will... if you let go of the chain.
Jack: YOU THINK I'M STUPID?!
Juliet: I don't think you're stupid, Jack. I think you're stubborn.
Ben: (regarding the handcuffs on the table) Sorry, I'm going to have to ask you to put those on, Kate.
Kate: And if I don't?
Ben: Then you don't get any coffee.
Kate: What did you do with Sawyer and Jack?
Ben: Now, why Sawyer?
Kate: Why Sawyer what?
Ben: He's the first one you asked about. "What did you do with Sawyer and Jack?"
Kate: You don't know me.
Ben: Of course I don't.
Ben: I brought you here so you'd look out at the water and feel comforted. Comforted that your friends were looking out at the same ocean. I gave you the dress so you'd feel like a lady. And I wanted you to eat your food with a real life fork and feel civilised. I did all those things so that you'd have something nice to hold on to... 'cause Kate, the next two weeks are going to be very unpleasant.
Dr. Christian Shephard: I think I know a little something about being obsessive.
Jack: No, being a drunk is not obsessive!
Dr. Christian Shephard: Let it go, Jack.
Juliet: What do you do, Jack? What's your profession?
Jack: I'm a repo man.
Juliet: The drugs we gave you when we brought you here have a fairly serious side effect - dehydration. Your head is probably sore, your throat is raw and if you don't eat or drink something soon, you're going to start hallucinating.
Jack: So, you're a doctor, huh?
Juliet: No... I'm a repo woman.
Sawyer: (after working out the contraptions only to be rewarded with a fish biscuit and grain) Unbelievable!
Mr. Friendly: (to Kate) Scratched you up pretty bad, didn't they? I'll bring you some antiseptic later.
Sawyer: How 'bout you bring me an ottoman? While you're at it, I could use a blowdry!
Mr. Friendly: Hey! You got yourself a fish biscuit! How'd you do that?
Sawyer: I figured out your complicated gizmos, that's how.
Mr. Friendly: Only took the bears two hours.
Sawyer: How many of 'em were there?!
Jack: Is this one of their... stations? The... the Dharma Initiative?
Juliet: They called it the Hydra.
Jack: So, you people are just... whatever's left over, is that it?
Juliet: Well, that was a long time ago. It doesn't matter... who we were... it only matters who we are.
Jack: Is that him?
Sarah: What difference does it make?
Jack: It just does.
Sarah: It's not gonna change anything...
Jack: Look, I wanna know! I need to know who he is.
Sarah: It doesn't matter who he is, it just matters who you're not.
Sarah: Jack... your father... when he called me... to help you. He was so drunk I could hardly understand him. Look at the bright side... now you have something to fix.
Juliet: Jack? What would you like to find out?
Jack: (on Sarah) Is she... is she happy?
Juliet: Yes, Jack. She's very happy.
The episode title, A Tale of Two Cities, is also a Charles Dickens novel which revolves around three main characters - two men that are in love with the same woman.
The book club discuss the Stephen King novel, Carrie, which revolves around a girl with telekinetic powers who, after years of bullying from her mother and the children at her school, unleashes them in revenge.
Sawyer: What, you talkin' to me now, Chachi?
Chachi was a character in the TV series, Happy Days.