In the last episode of "Castle" Season 6, "Dressed to Kill," Castle and Beckett did not fix a wedding date, but almost decided to get married in spring. Now that Beckett has a perfect wedding gown, one can expect Caskett [Castle + Beckett] to talk about wedding and preparations in the upcoming episodes.
The sneak peek of "Castle" Season 6 Episode 15, "Smells Like Teen Spirit," provides a glimpse of Beckett and Castle discussing music for their wedding. Castle can be seen going for a music band, while Beckett prefers DJ. According to sneak peek, Castle and Beckett realise that they do not have their song. It is a small issues that listening to plenty of music cannot solve.
The episode "Smells Like Teen Spirit" takes Castle back to one of his alma-maters. It seems Castle had a reputation of being a nut-case. In another sneak peek, the head of the school can be seen saying to Castle, "I see you've managed to extricate yourself from a life of delinquency ... and become a writer of sorts." The head of school insists on addressing Castle as Mr Rogers. When Castle tells his former school principal that he is Castle now, the principal can be seen saying, "You'll always be Rogers to me."
TV Guide report suggests that Castle was expelled from this school. And it gets worse from there. "He has to go back and revisit his history in a really fun way," Andrew W. Marlowe, creator of "Castle." said to TVGuide.com. "Unbeknownst to him, his nemesis, the crotchety principal, is still running the school, so some great humour comes out of that."
The murder suspect of the new episode is a young girl who knows telekinesis. According to ABC's synopsis of the new episode, "The murder of a high school mean girl draws Castle back to one of his many alma maters, where he is giddy to learn that the evidence points to a surprising perpetrator - a teenage telekinetic, throwing he and Beckett into a real-life "Carrie."