Castle is changing. I'm not sure I like it but will hang in for a while longer because I like the characters. So far I am disappointed in the episodes. The spark is gone and with the new route the show is taking, it may not survive. I think the role of Alexis is bogging down the series. Alexis is good character, but only in small doses (imho). I think they need to get back to Beckett/Castle working together to solve crimes. Forget the P.I. storyline. I am not a fan of shows that keep the same storyline going for season after season, such as Beckett's mom's murder, Dr. Niemen(sp.?) and the other killer..(.the alphabet/number guy....not sure of the name). It gets boring very fast.