In this fourth book in the Dragon Wars series 'At the Rising of the Star' a decade has passed and Thor's Shadow Circle rebellion has reached a crisis point. Something has to change or the rebels will fall to the cunning and cruelty of the Sentinel agents that do the Meccanat High Council's dirty work. The young daughter of a key Sentinel agent defects to the Shadow Circles, revealing the means to take down her father. After a successful mission to do just that, a chance meeting and an incredible revelation leaves Thor and his people astonished and outraged.