Shield of fire - Alice Leader

A powerful historical adventure set in ancient Greece. Nyresa is forced to leave her island home when the Persians threaten to invade. As she starts a new life in the hustle and bustle of Athens, she begins to make new friends - and finds herself sucked into a dangerous new world of subterfuge, lies and treason. With her beautiful cousin Rhode and a young soldier called Cherson, she uncovers a plot to betray Athens to the Persian army - and as the two armies build up to an unforgettable battle at Marathon, the fate of Athens is in the hands of a 12-year-old girl.