39 Castles: Greengrove Castle by Matt Thorne
Never draw your sword unless absolutely necessary . . . Eleanor lives a normal life in a small castle community until the day that she is visited by the mysterious Anderson. He tells her that she has been selected to join the elite and highly secretive organisation known as the Castle Seven. Eleanor must begin training, alongside four other children, so that she can take part in missions and quests on the community's behalf. At first Eleanor enjoys her lessons in horse-riding, sword fighting and diplomacy. But then she faces real danger: wolves, imprisonment, and signs of betrayal from those closest to her. She must learn quickly who to trust, and how to hold her own. This is a gripping and exciting adventure story set in a bewitching world of castles and intrigue.