The Masked City by Genevieve Cogman is a wonderful read for all those who enjoyed Mr Penumbra's 24 hour Bookstore by Robin Sloan, Jasper Fford's The Eyre Affair or Ben Aaronovitch's Rivers of London. Librarian-spy Irene is working undercover in an alternative London when her assistant Kai goes missing. She discovers he's been kidnapped by the fae faction and the repercussions could be fatal. Not just for Kai, but for whole worlds. Kai's dragon heritage...