A Congress of Kings - Adventures of Talon de Gilles, #9

The year 1191 is the beginning of the Third  Christian crusade in the Holy Land, and one of the most significantUnder the vigilant protection of Lord Talon and his companions, the land of Kantara enjoys peace even as the tyrant Isaac Komnenos continues to plunder the rest of Cyprus. However, dark clouds are gathering and great storms bring with them unwelcome Norman visitors. Soon Talon is embroiled in the invasion of Cyprus, assisting King Richard of England who, en route to Acre for the Third Crusade, must save his royal sister, Queen Joanna, from Isaac's clutches.
Talon is forced to accompany Richard I to the besieged city of Acre-a city which holds painful memories for Talon. There, quarreling kings, men who once were kings, and men who want to be kings form the leadership of the Crusading armies. Their lust for power blinds them to the threat posed by Salah ad Din, the skilled general who fights on the Arab side, continuing the tragedy that started with the terrible defeat at Hattin.
And lurking out of sight is yet another implacable foe who prepares his own assassins for a mission of revenge. Talon has eluded the Fidai of The Master, Rashid ad Din for nearly twenty years, but his luck may be running out.