Good opening episode. I was surprised that Kate agreed to marry Castle so quickly though. I thought she'd say no, go off to DC and then they'd be apart for a while. Then I thought she'd realise she doesn't want to be there, can't be apart and would come back and say yes. Well she probably still will decide that being in Washington isn't for her. But maybe she'll change her mind about marrying? But they've done enough will-they-won't-they already, so they don't need to put us through more of this again.