Not an outstanding episode, but a decent way to spend an hour.
I did like seeing Martha get her CSI on by realizing that Professor Lazarus had unwittingly supplied her with a DNA sample.
Mark Gatiss was delightfully arrogant.
I think it was a mistake to try to recreate Lazarus’ face on the creature. The CGI just didn’t do it for me. I couldn’t help but think back to a similarly unconvincing man/creature hybrid in The Mummy Returns.
Why did we need yet another villain whose name, coincidentally, specifically reflects his area of interest? I can just see Professor Lazarus inventing a mind-control device enabling him to take over the world, then tossing it into the garbage because he realized he had the wrong name. “If only the Mesmer family down the block had adopted me, THEN it would be OK for me to use it,” he would sadly mutter.
The Doctor needs to find an assistant who will club seemingly dead foes with a frying pan or something JUST TO MAKE SURE. This will save him needless trouble. And if he feels the need to express moral outrage over clubbing someone with a frying pan, well, he LIKES expressing moral outrage, doesn’t he?