Finally caught up with this when it aired in the UK last night.
Oh. Dear.
The actual episode, as others have said, wasn’t bad in itself. The reveal about LokSat was terrible however, although I’m exceptionally glad it wasn’t Vikram all along, because that would have been worse. Given how much they’d side-lined Vikram lately I’d come to the conclusion that they’d given up on him even as a character, let alone a master villain.
The reveal that it was the guy from the murder club though? That was so random I reminded of that Simpsons episode when they left everyone marooned on an island. “Oh let’s say Loksat was….…Alexis.”
That tacked on coda really should have had a voiceover of Castle saying “I didn’t know how long we’d have together. Who does?”
I will miss the show, or at least the show it used to be, but like everyone else I’m glad it’s over.