Oh this is going to be a fun season! Glad we got the "new captain opposed to Castle being there" out of the way quickly, though not at the cost of potential future friction between them.
The ending was interesting, with Castle's humorous interplay with Alexis... then his retreating to his den to continue investigation of Beckett's case.
Nice to see Beckett has what everyone needs - a Klingon psychiatrist!
"It's not so much that it's 'shut down' as the government has been rebooted into safe mode."
- Tim and Daniel Shamblin