Kate Thompson 
Wanted! 

Marcus is a young baker in Ancient Rome, living with his family in the shadow of the murderous Emperor Littleboots. When a slave boy shoves the reins of a sleek, beautiful horse into Marcus»s hands seconds before he is killed by a soldier, Marcus knows he»s in danger – because the horse is Incitatus, the Emperor»s most prized and powerful animal.
Will Marcus find a way to keep Incitatus hidden? Are the rumours of Littleboots»s death true – or is it all a trick? And how can Marcus save himself, and his family?
A fast-paced adventure from the winner of both the Whitbread Children»s Book Award and the 2005 Guardian Children»s Fiction Prize.