Castle Season 6, Episode 7 ("Like Father, Like Daughter") will have Alexis, Rick and Kate working together to save a death row inmate. Ahead of the Nov. 4 airing, Stana Katic shares with her Twitter followers some sweet Halloween cosplay photos, celebrating Kate's 5-year romance with Rick Castle (Nathan Fillion).

For four seasons, Castle and Beckett - Cas-kett to fans (gory but true story) - had this dance: One denies some romantic feelings, the other pushes on. Just when one is about to be over with denial, the other gives up. And then finally, after another near-death experience, "I want you" was said. It is hard to miss the romance in Castle when Stana Katic and Nathan Fillion sizzle on the small screen with their sexy and fun chemistry.

Stana and Fillion, who has always been very appreciative of fans, are shown much love in this cute photo on Twitter. The collage reminisces through Kate's five years on the ABC procedural family dramedy. In Episode 7, "Like Father, Like Daughter," the "family" comes front and center. Alexis Castle works with future official stepmom Kate and dad Rick to delve into the case of a death row inmate. (Molly Quinn is now fully grown up, how time flies!) Will the Castles save a life?

Stana Katic herself does not shy away from reposting fan posted images, especially when it's Halloween. Some couples apparently enjoyed cosplays as Cas-kett. (Click on the bold links to see the photos.)

Castle 6x7, "Like Father, Like Daughter," airs after Alexis told her dad to "accept" her feelings for Pi. Rick did not expect her daughter to bring up that he never told her he and Beckett got engaged. It makes everything worse between father and daughter, when Castle is unable to accept Alexis' grown-up decision to move in with Pi. It will be interesting to see the three characters work together despite the wall that Alexis has put up.

TV.com summarised Castle Season 6, Episode 7 in a few words below (SPOILERS):

"Castle and Beckett help Alexis with an Innocence Review case. With only 72 hours until his execution, their goal is to prove that the death row inmate was wrongly convicted. But, some of what they uncover may only strengthen the case against him."

More 'Castle Season 6' and TV Guide Features:

Castle Season 6 Spoilers: Stana Katic Teases Pre-Wedding Issue, Nathan Fillion Goes Sci-Fi Geek in Next Episode [PHOTOS]
The Mentalist Season 6 Spoilers, 'Fire and Brimstone' Nov. 3; Five Red John Suspects, One Patrick Jane, One Room, One Explosion [VIDEO]
The Good Wife Season 5, 'The Next Day' Spoilers, Review: Alicia Florrick Brings It, More Riveting Episodes to Come [VIDEO]