The Left-Handed Booksellers of London

On first reading, I'm not quite sure what to make of this. It's a fairly congenial novel that reads quite well as a story, but it's also a wild fantasy in which all kinds of powerful magical effects are deployed casually with minimal explanation. I don't approve of wild fantasy, I prefer magic to operate rather like a branch of science, following laws akin to the laws of science.

The characterization is rather sketchy: I don't feel I get to know any of the characters well.