Book excerpt: Rosemary Sutcliff’s Carnegie Medal-winning Roman Britain Trilogy continues more than a century after the events of The Eagle of the Ninth (The Eagle) in The Silver Branch as two cousins join the Roman side in the fight against a tyrannical British emperor. Violence and unrest are sweeping through Roman Britain. Justin and Flavius find themselves caught up in the middle of it all when they discover a plot to overthrow the Emperor. In fear for their lives, they gather together a tattered band of men and lead them into the thick of battle, to defend the honor of Rome. But will they be in time to save the Emperor...