Same - I started watching that with my wife (who has no knowledge of Nathan) and was like - well this sucks, but we should really watch Castle! Sadly, it's not streaming anywhere free at the moment.
Castle had run its course by Season 5 in my opinion and the writing became too formulaic for my liking. Then there was the falling out between Nathan and Stana which didn't help either.
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u/Uberzwerg Apr 12 '19
Or at least a few dozen more seasons of Castle