The team is separated, and the characters need to figure out what their priorities are.
This episode is packed with explosive action, and psychological torment. Basically, my favourite kind of story. We're learning a lot more about the ever-present countdown and those behind it. And this is one of the things that I really like about the story, is the villains have a purpose. A noble purpose, even. They're certainly not going about it in the best of ways (if there is a best way), but you can almost sympathize with them.
And this is really the only time that a cliffhanger ending is okay. I might not have agreed with myself back when the series was incomplete. I might have torn my hair out. But the series is done now, so I don't need to wait. I'm going to jump right into the final episode with both feet and get carried along for the ride.
You should come on the ride, too. This series is too good to miss!