I enjoyed it, but without a whole lot of enthusiasm, as I did the opener - but I realized, as I typed the previous clause that the opener has already faded almost completely away in my memory.

I like Bill, but the episode felt rushed, and so went down like a thin broth instead of a hearty stew. The story felt like the outline of a story, not a story itself. We didn't meet a single character outside of our twosome to care about.

But despite all that, Capaldi is charming and Pearl Mackie's Bill has a charming enthusiasm that - now that others have pointed it out - does echo that of Ace, just a little.