Episode just starting as I throw this up!The Doctor and Clara are separated by water and centuries. She’s still stuck in the lake-bed mine in 2119 assailed by zombie apparitions, while the Time Lord arrives in 1980, on the same site before it flooded. He has his work cut out with temporal anomalies and a lumbering new foe called the Fisher King.
yes the Doctor dying trope's gotta end, the timey wimey ending didn't quite make sense and the Fisher King in the harsh light of day looked like a classic era monster (and not in a good way) but it was funny, exciting, creepy, basically all the things the best Who episodes are. Capaldi continues to be excellent, as is Jenna, and it benefited from a really good guest cast. It's a shame O'Donnell died, I've always liked Morven Christie and her subdued riff on Osgood was rather nice, and I thought Arsher Ali was very good as Bennett (in fact I might add him to my maybe Doctor material one day list). Cass and Lunn were good as well, loved Cass being stalked by Moran.

Overall, this wasn't a bad episode, just very bland, and not a great follow up to part 1.