I liked it a lot. Still not an excellent, but so far I'm preferring this part of the season.
Seeing Diana Rigg and Rebecca Stirling acting their chops off against one another was one of the best parts for me. I've loved those two in anything I've seen them in, to see them together... marvellous.
Liked the old school horror feel. Liked our Victorian gang. Mr Sweet was an odd choice for a villain, and where did he get the technology smarts to build a steampunk V2 (a phrase I never thought I'd use)?
Really not sure about the kids ("we'll tell Dad"? Really? That works?), but hey it's Gaiman.