Will Campbell is a Templar Knight, trained for war. But as a member of the secret brotherhood known as the Brethren, he is also a man of peace. After years of bloodshed, the Brethren have helped to create an uneasy truce between the Christian and Muslim forces in the Holy Land. But there are those on both sides for whom peace is not an option....

After years of fighting in the desert sun - and secretly working for peace with the Brethren - Will Campbell returns to find his Scottish homeland under attack by his enemy, King Edward I....