One sorry for himself, Athenian philosopher and mathematician. Exiled from Athens on pain of death. Banned from teaching. But for Carthage, he holds a key. His theories could lead to a navigation system that will enable them to extend their supremacy. Anaxagoras has a choice. Help the natural enemies of Athens or fade into obscurity? Hanno wants his man and the secrets to accurate navigation his brain may hold. But does he owe loyalty to the city that has discarded him? It's 450 BC and Hanno now knows he needs just one piece to complete the picture; to take Cartage on to its manifest destiny.