Re: Castle Season 5 (including Spoilers)
And as a result of the switch we will see the aftermath/deeling of "something" that happened before we see what happens.
Xander: (to Willow) So whatcha been doin'? Doing spells? (to Oz) She does spells with Tara.
Oz: Yeah, I've heard about that.
Xander: Sometimes I think about two women doing a spell... and then I do a spell by myself.