Credit: Ron Tom/ABC Television Group © 2011 Disney Photo: Beckett and Castle Investigate in Castle Season 5, Episode 6: "The Final Frontier"

Castle is taking a trip tonight, but thankfully, we’ll be able to watch the whole meta-filled adventure go down.

In Season 5, Episode 6: “The Final Frontier,” our favorite detectives head to Comic-Con. Well … a “sci-fi convention” that sounds like it, at least. But it’s not all fun and games.

Check out the official synopsis below:

“When a body is found at a sci-fi convention, Castle and Beckett are warped into the heart of fandom — a world of egotistic celebrities, diehard costumed fans and enough drama for two galaxies.”

And not only will Caskett be caught up in the geekiness, but a man from Kate’s past exposes one of her biggest secrets! But you’ll have to wait until tonight to see Rick’s reaction …

You can check out the promo to tide you over, and then watch Castle Season 5, Episode 6: "The Final Frontier" tonight, Monday, Nov. 5, 2012 at 10 p.m. ET on ABC.


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