The book follows an Athenian named Glaucon the Beautiful, who spends the novel conveniently finding a way to be personally involved in every major conflict and event of the Persian War (he even briefly meets Arimnestos!) while being found guilty of a crime he didn't commit and working throughout to save his wife from being forced to marry the very man who betrayed him.
Ok - I'll admit the story is pretty simple, action-based and and kind of a mash-up of The Fugitive and Forrest Gump. But putting all that aside, it's a fun read, a great intro to the broader points of the Persian war and even features Simonides in a strong supporting role. Although I would suggest many other novels off of this list to be read for a better read, A Victor of Salamis is a pretty great introduction to the players and events of the Persian War.