Only a fool crosses a god, but Ellaeva and Lyram will do anything to get what they want.

Chosen as a five-year-old orphan to be the Left Hand of Death, Ellaeva has nothing to call her own—nothing except a desire to avenge her murdered parents. Her duties leave her no time to pursue the man responsible, until both her work and revenge lead to the same place—the lonely castle where Lyram Aharris is serving out his exile for striking his prince.

Lyram is third in line for the throne, and when the castle is unexpectedly besieged, he fears his prince means to remove him from contention for the crown permanently. Ellaeva’s arrival brings hope, until she reveals she has not come for the siege, but instead she hunts the castle for a hidden necromancer dedicated to the dark god of decay.

Within their stone prison, Ellaeva and Lyram must fight to save themselves from political machinations and clashing gods. But as the siege lengthens, the greatest threat comes from an unexpected quarter.