Pisa, May 1364.
 
Sir William Gold is looking forward to a lucrative career as a hired sword in the endless warring between Italy's city states. But when a message comes from the Grand Master of the Hospitaliers, William is forced to leave his dreams of fame and fortune behind him.
 
The Hospitaliers are gathering men for a crusade, and Sir William must join them. Yet before they set out for the holy land, the knights face deadly adversaries much closer to home . . .
 
In the twisting politics of Italy, no one can be trusted. And there are those who would be pleased to see the crusade fail . . .
 
Can Sir William and his knights survive this impossible mission into the heart of the enemy?