- [while reading the journal of a private investigator from the '40s, Castle find information]
- Richard Castle: The Blue Butterfly. It's a necklace! That's why Stan Banks was killed... Why am I narrating?
- Joe Flynn: It happened... backstage... right upstairs. They were stealing a moment together which was dangerous because she was Dempsey's girl. As they stared into each other's eyes, Kate's heart quickened.
- Kate Beckett: Did you just say "Kate?" Are you picturing the P.I. as you, and me as the gangster's moll?
- Joe Flynn: What? No. And I didn't say "Kate." I said, "fate." Fate's heart quickened. I was being poetic. God.
- [Castle stops reading from the diary]
- Kate Beckett: And?
- Richard Castle: And... that's it. That was the last entry in the diary.
- Kate Beckett: What do you mean, that's it? What happened to Joe? What happened to Vera?
- Richard Castle: I don't know.
- Kate Beckett: Well, why would you tell a story when you don't know the ending?
- Richard Castle: If you wanted a beginning and a middle and an end, I have 27 novels you could choose from?
- Vera Mulqueen: But it's not a necklace, Joe. It's a diamond noose. It's getting harder to breathe.
- Joe Flynn: Then we gotta turn that noose into a lifeline.
- Kevin Ryan: When was the last time you saw him?
- Luella McManus: Oh, this morning. Stan was all smiles. Gave notice he was moving out 'cause his ship was coming in.
- Kevin Ryan: What ship?
- Luella McManus: Oh, I don't know, the Titanic, from the looks of things.
- Javier Esposito: [holds out a business card] Well, if you can remember anything else, can you please give me a call?
- Luella McManus: Don't hold your breath, hotshot.
- [leaves without the card]
- Kevin Ryan: [to Esposito] I think she likes you.
- [believing the current murder is connected to a murder from the '40s, Castle is reading an old witness statement]
- Kevin Ryan: What happens next?
- Richard Castle: I don't know. That's the end of the statement.
- Kevin Ryan: But if Sally wasn't Vera's sister, then who was she?
- Richard Castle: Sally set up the P.I. It's a classic film noir twist.
- Kevin Ryan: But why?
- Richard Castle: [excited] I don't know.
- Kevin Ryan: What was Sally up to?
- Richard Castle: [more excited] I don't know.
- Kevin Ryan: Do you think she was connected to Dempsey?
- Richard Castle: [even more excited] I don't know. Isn't this great?
- [first lines]
- Betsy Sinclair: [singing] Comes a rain storm, put your rubbers on your feet / Comes a snow storm, you can get a little heat / Come love, nothing can be done...
- Vera Mulqueen: [after Dempsey's goons beat up Joe] Are you hurt?
- Joe Flynn: What, this? It's nothing. You should see what my face did to the other guy's fist.
- Luella McManus: Stan's dead? Well, that's just great. What am I supposed to do with all his crap?
- Kevin Ryan: We'll be taking... some of it off your hands as part of our investigation.
- [having just kissed Joe Flynn to cover for Vera with Dempsey's boys]
- Betsy Sinclair: You better wise up, Vera. Dempsey will have you butchered if he finds out. I mean, he's a hell of a smooched and all, but damm it, girl, is this yum-yum really worth it?
- Vera Mulqueen: He's the cream in my coffee.
- Betsy Sinclair: You two are a walking fairy tale
- [turns and starts to leave]
- Betsy Sinclair: Good Lord!