The main cast of the ABC series Castle included Seamus Dever, Tamala Jones, Jon Huertas, Stana Katic, Nathan Fillion, Molly Quinn, and Susan Sullivan.

An investigation into a vampire fetish community eventually wrapped up with Rick Castle throwing an epic Halloween bash for all of his friends. Castle actually wore two costumes in Castle Season 2 Episode 6, “Vampire Weekend” The first was from Nathan Fillion’s cult favorite Firefly character Capt. Mal Reynolds but for the actual party he dressed as one of his favorite authors, Edgar Allen Poe. Our favorites were Lanie as Cat Woman and Martha as Cruella de Vil.

What kind of stories is Martha sharing about Rick and her family? We'll have to watch Castle Season 8 Episode 4 to find out.

Stephanie Weir guest stars as someone who appears to be an old friend on Castle Season 8 Episode 4, "The Nose"

We don't see Beckett back at the loft yet, but it appears that Rick has brought the wine on Castle. "The Nose" is the fifth episode of the show's eighth season.

We don't know exactly what to expect from Castle Season 7 Episode 23, "Hollander's Woods" but we can't wait to watch on Monday, May 11th on ABC.

There's a definite celebration going on in the Castle season 7 finale so let's all raise our glasses for a toast along with the cast.

We don't think we've seen Martha in a facial mask since Castle Season 1. Will she open the door for Kate Beckett in this universe as well?

It's comforting to know that Martha's style remains the same no matter what the universe.

Talk about an alternate universe! What the heck happened to Alexis hair? This is going to take some getting used to.

Castle is thrown into an alternate universe where things look a bit different. He definitely hired someone else to decorate the loft.

Nathan Fillion and Susan Sullivan share a sweet moment behind the scenes on Castle Season 6 Episode 6, "Get a Clue"