Castle: Any extreme sports in your history I've yet to hear about?
Beckett: Well, I mean, I think catching killers is pretty extreme. And then there's marrying you.
Castle: Ah, yes. I admit I am extreme. Extremely handsome.
Beckett: Yep... with a high degree of difficulty.
Alexis: (to Beckett) Oh, my gosh. Did you really beat dad at scrabble?
Castle: I concede nothing, except that I need more coffee.
Martha: That is quite an accomplishment, young lady. Nobody beats him... ever.
Beckett: Oh, yeah. He's mentioned that... repeatedly.
Martha: Ahh, how the mighty have fallen.
Castle: "Richard Castle. One word short." I cannot allow this to be my epitaph.
Although credited, Penny Johnson Jerald (Captain Victoria Gates) does not appear in this episode.