Forced to come out of hiding, Reynevan, while on a dangerous secret mission for the Hussite leaders, uses this opportunity to avenge the death of his brother and discover the whereabouts of his beloved.

After his adventures in The Tower of Fools and Warriors of God, Reynevan is on the run again, harried by enemies--some human, and some mystical--at every turn. These are cruel and dangerous times for a man such as Reynevan, and to survive, he must set aside his history as a peaceful healer and idealist and play the brutal role of Hussite spy as crusades sweep through Silesia and the Czech Republic, and the world around him is forever changed.

The action-packed historical epic is inspired by the true story of daring mercenary leader and one of the greatest warriors in history. After the death of its emperor, the Holy Roman Empire plummets into chaos while corrupt kings battle for control of the empty throne. To battle the tyranny and greed of those clawing for power, Jan must lead a rebel army in this sweeping saga of war and betrayal.