The Man With Sapphire Eyes

In this exciting sequel, disaster threatens Nico, ballot boy to the doge, as neighboring Padua launches an undeclared war. Mistrustful of diplomats and spies, the doge dispatches Nico on a secret mission to the court of King Louis of Hungary to gauge the king's resolve to aid Padua.
The doge also drafts Donato Venturi, the greatest swordsman in Venice, nicknamed Black Hercules, as Nico's adviser and bodyguard. It's love at first sight for Nico, but he knows nothing about Donato, the son of a Venetian noble and a princess of Mali. Assuming Donato is straight, Nico guards his feelings until an unlikely encounter at the Prior of Brotherly Love proves otherwise.
The pair steal moments together, but the war changes everything. Cutthroat political struggles with his own nobles keeps the doge busy in Venice as Nico again confronts the carnage of battle, testing his cunning. This brings him face-to-face with his nemeses, Ruggiero and Marcantonio Gradenigo, forcing an unplanned rescue of his soulmate, Alex.
When the war goes disastrously for Venice, the fate of the Serene Republic hangs on the will of the doge and the skills of Nico and Donato. Desperate to defeat Padua and drive out the Hungarian invaders, they risk everything in a final gambit to checkmate in three. In love as in war, winning and losing aren't what they seem.