The Turnkey | 
pickLots of historical information about London during the blitz, and how it felt to be around when the bombs fell. Flossie is the turnkey guardian of a large cemetery who spots the ghost of a high ranking Nazi in London who is spying via the use of a crystal skull - can London be saved? Really interesting concept which mostly works (a few rough patches but then this is an early MG book) with series potential.
thegirlwiththelibrarybag I've been wanting to read this since I saw it in the bookstore but staying true to my book ban, meant waiting for the library to get it! 7y
