SPOILERS FOR SEASON 5 FINALE!
Season five wasn't as edge of your seat high stakes as the seasons before it, but it definitely allowed us to watch Castle and Beckett's relationship develop while still providing us with some tricky cases.
In tonight's episode we all knew what was coming; as had been pretty clearly established last week, Beckett was going to interview for a job in DC and she was going to get it. What was most surprising about this week's episode was the fact that it was half way done before Castle even discovered she'd interviewed which left scant time to focus on their argument after her secret had been revealed. In a way that made the finale all the more powerful.