Author:  Killeen, Matt 
Thrillers (Children's / Teenage)
Published on 8 March 2018 by Usborne Publishing Ltd in the United Kingdom as part of 'the Orphan, Monster, Spy' series.

Paperback | 400 pages
132 x 197 x 26 | 326g
Shortlisted for the Costa Children's Book Award and the Branford Boase AwardNominated for the CILIP Carnegie Medal A teenage spy. A Nazi boarding school. The performance of a lifetime.
Sarah has played many roles - but now she faces her most challenging of all. Because there's only one way for a Jewish orphan spy to survive at a school for the Nazi elite. And that's to become a monster like them.
They think she is just a little girl. But she is the weapon they never saw coming...with a mission to destroy them all.