Fly By Night: by Frances Hardinge

In a world where reading can condemn you to death. One very different girl searches for her place among an unknown city. Having no ties to anyone but a known criminal, her journey could take her anywhere. She knows secrets she shouldn't and people who just as her, can read. When she is asked to be a spy for two enemies she has to choose correctly or everything could come crashing down on her and everyone else in the city. She must find the people who were once tied to her father and ask their assistance. When she can't run from those trying to kill her she must create a plan to save her new found friends. Read this thrilling novel where nothing is as it seems and no one is who they appear to be.