Jake Dudman does a much better job with his Capaldi impersonation this time around. He seemed to relax into it more, and as a result, sounded a lot better. Of course, it's not Capaldi, and some people aren't going to like that, but hey, it looks like Capaldi in my head, so that's what matters.
The first part of this interconnected set of episodes is probably the best. I admit I got a little confused by what was actually going on for the last part. And the middle part . . . well, the middle parts of a trilogy are generally the weakest, right?
But anyway, an enjoyable set of episodes and nice to have Keira Sanstrom back as a regular.