The Invisible Library series by Genevieve Cogman is the perfect read for book-lovers everywhere. It's a fast-paced adventure - think Doctor Who, but with Librarian spies. Reviewers have also found a dash of Discworld and Jasper Fforde, a hint of Sherlock Holmes and a great deal of humour.
The first novel in the series, The Invisible Library, introduces Irene and her assistant Kai: a pair of librarian spies on a mission to retrieve a dangerous book from a parallel world. In an alternative version of Victorian London - where magic runs rife - they soon find that the book they seek has already been stolen. Cue a whirlwind quest down a rabbit hole of forbidden societies, twisted plans, new friends, old enemies and the occasional dragon. What could possibly go wrong? Irene and Kai s (mis)adventures continue in The Masked City, which takes them to a sinister version of Venice, and then in The Burning Page and beyond things really start to heat up . . .
Brilliant and so much fun. Skulduggery, Librarians, and Dragons - Cogman keeps upping the ante on this delightful series! - Charles Stross
A breath of fresh air - Guardian