Allene Whelan is trapped in the True Kingdom, held captive by their cruel leader Macsen. It's her job as the newest Raven Knight to assassinate him by any means necessary. As a sylph whose greatest weapon is her body, that means seducing him...all the way to the grave.

But the closer Allene gets to Macsen, the more she realizes he's being played by a crueler enemy: Morgause, the manipulative sidhe he regards as mother. And Macsen doesn't seem interested in hurting Allene. The closer they grow, the less she wants to kill him.

Trapped by passion in a shadowy labyrinth of lies, Allene forces Macsen to make a choice. Does the Priest of Skulls want to rule through death, or through love?