Castle: Whoa. You smell that? Wafting scent of printed pages. Comicadia. Beckett, this place is the premier comic book shop. It's the Vatican to a Catholic. It's Mecca to a pilgrim. Upstream to a...
Beckett: I know, Castle! I bought my first comic here when I was 14. Sin City. Dame to Kill For.
Castle: Hard core! Okay, whoa, okay. If you could be any comic book character in the world, who would you be?
Beckett: Elektra.
Castle: Oh. A ruthless assassin who hides from her emotions.
Beckett: No, maybe it's because she's got badass ninja skills.
Castle: Oh.
Beckett: What about you? Iron Man, Spiderman? No wait, I know, Annoying Man.
Castle: Try billionaire industrialist Bruce Wayne, aka, the Dark Knight. He's brooding, he'd handsome, and he has all the coolest toys.
Beckett: Wow, digging deep on that one.

Castle: You know, Ryan, none of this is your fault. The fact that he used your gun...
Kevin Ryan: That weapon was issued to me by the city of New York. I let it out of my hand, and now a girl is dead. So please do not tell me that it's not my fault.

Esposito: Yo, Ryan, 'sup man, where you been?
Ryan: Down at the college running down that break-in in Hamilton's office. So listen to this- (looks down at the desk) What the hell is this?
Esposito: That, my friend, is Beau Randolph's alibi.
Ryan: A dead pigeon?
Esposito: CSU found it on the roof of his building with a slug on his belly from his .45.
Ryan: Seriously? Randolph really did come up there, huh?
Esposito: Just writing him up for animal cruelty right now.
Ryan: Maybe there's still time to cryogenically freeze the little guy��

Kate: Hey.
Castle: Hey.
Kate: What are you doing?
Castle: Just waiting for my partner. Maybe you've seen her. Pretty girl, thinks she can leap tall buildings in a single bound, carries the weight of the world on her shoulders, yet, still manages to laugh at some of my jokes.
Kate: She sounds like a handful.
Castle: Tell me about it. Anyway, if you do see her, tell her she owes me about a hundred coffees.
Kate: Castle? Thank you.
Castle: For what?
Kate: For not pushing, and giving me the space to get through this.
Castle: Always.

Kevin Ryan: When I started in Narcotics, I was so green. I-I didn't know how things worked. One day, there's this major bust - street gang cooking meth. They're stacking up guys in the bullpen, taking their statements one by one. Place is a zoo. I'm answering phones in the squad. Girl on the line, name of Alisha, asking for my lieutenant. So I call out across the bullpen "Hey lou, Alisha's on the phone for you."
[Beckett snorts with laughter]
Kevin Ryan: It was her tip that got these guys nailed, and all of them just heard me call out her name. Searched all day and all night, looking for her before the gang could get word back to the street that she was a narc.
Beckett: Well, did you find her?
Kevin Ryan: I did. Got her into witness protection, but... that was the stupidest thing I'd ever done as a cop. Until the day Jerry Tyson got the drop on me and stole my weapon.

Lanie: I told you, it's none of your business.
Castle: Of course it's none of my business, that's why I want to know.
Kate: Know what?
Castle: What she and Esposito were fighting about.
Kate: That's none of your business.
Castle: That's the point.

Mike: We just got your Derrick Storm graphic novel, I mean, the art, the writing, it is, in a word, awesome!
Castle: Tell me, what's your favourite part?
Kate: You don't have to answer that question. His ego does not need anymore feeding.
Mike: Definitely where Derrick Storm escapes from the two bad guys by crashing the taxi cab.
Castle: Taxi cab!
Mike: Oh, I'm sorry, Detective Beckett, I should've said spoiler alert.
Kate: Oh, no, that's okay, I won't be reading it.
Mike: Really? I saw your name on our list. You preordered a copy.
Castle: Did she now?
Kate: I was just being supportive.

Ryan: Haven't you ever wanted to be a superhero? Going out there, prowling the city, knocking some heads.
Esposito: I do that now.

[Beckett's boyfriend Josh blames Castle for her getting shot]
Castle: He's right, you know. This is my fault.
Martha: Richard Castle, don't you dare blame yourself. You did not shoot her.
Castle: No, but I put her in the crosshairs.