[This is a review of Castle Season 6, Episode 12. There will be SPOILERS.]

It seems as if every other episode this season, Castle (Nathan Fillion) and Beckett (Stana Katic) stumble upon a web of intrigue that puts them way in over their heads and this week is no exception. The network marketed ‘Deep Cover’ as a sort of father-son piece; and to be fair, it is. Really, though, Castle fans will always remember this episode as the one where the dynamic duo finally set a date for their wedding.

There’s a tease at the beginning where Kate and Castle are bouncing wedding ideas off of one another and when they reach the inevitable impasse, Martha (Susan Sullivan) is there to suggest elopement as a viable alternative. But these two want a wedding, so that idea’s nixed quickly.

Next thing you know, a call comes in about a murder and then James Brolin flashes his charming smile for the next 30 minutes with varying degrees of success. Shortly before the end credits roll, Castle claims Kate as his family as opposed to dear ol’ Dad and decides that September is the perfect time to get hitched, book signings be damned.

Between the beginning and the end, however, it’s not all smooth sailing for the couple. You would think by now that Castle would realize how horrible he is at lying to Beckett. Any attempts on his part to be covert and sly are awkward and rushed, and he’s terrible at at keeping his lies straight. In fact, it’s almost like he wants to get caught so that he has a legitimate excuse to come clean without fully breaking his dad’s trust.

Trust is at the heart of this episode. As is family. Fillion does a good job here keeping the tension between a man who is building a life-long relationship with the woman he loves, and a little boy still desperate to please his father. While others around him are more cautious and careful, Castle wants to believe Jackson Hunt (James Brolin) is telling him the truth. Even when all of the evidence says he’s a CIA operative who’s gone off the reservation as an assassin.

In this way, Castle acts like you’d expect him to, so it’s interesting to see how others are processing this surprise visit. Martha is shocked at first but adapts accordingly – if not a bit warily – and in the end she gets what she’s always wanted from Hunt: closure.

Meanwhile, Kate is understandably skeptical. She goes along with Hunt because he’s the only one who can procure justice for the victim, but things never get to a warm and fuzzy place between the two. And yet when all is said and done it is she who has the insight to see that Hunt purposefully brought the case in to their jurisdiction and it is she who suggests maybe it was his backwards way of wanting to spend time with his son.

The only thing missing here is Alexis’ (Molly Quinn) take. She knows nothing of Hunt’s involvement in Paris and is spoken of but not seen here, too, leaving her miles out of the family loop for the time being. Yes, she’s a big girl now, out on her own with her boyfriend, but it still would be nice to see how she reacts to the truth and how she gets along with gramps. Maybe next time.

How about you: Will you remember anything beyond the setting of the wedding date? Do you think this means a fall premiere wedding, or is it it TV-land time versus our time? How did you like James Brolin this time around? And most importantly, did you giggle when Kate asked Ryan (Seamus Dever) if he thought the baby looked like Esposito (Jon Huertas)?

Castle returns next Monday with ‘Limelight’ @10pm on ABC.