The heart-pounding adult debut from #1 New York Times-bestselling author Adalyn Grace, about an ancient war between angels and demons, and the human knight determined to end it at any cost.

Aurelie Chantelune was born to serve. Raised as a knight in a kingdom ravaged by demons, she’s spent her life honing her blade, driven by the memory of the monsters who tore her family apart and by the knowledge that she’s one of the few who can stop them.

If Aurelie can claim her first kill, she’ll inherit a legacy passed down through the Chantelune bloodline: a soulbond with Yuriel, an angel whose power is vital to her kingdom’s survival. But when those she loves begin turning into the very monsters she’s sworn to destroy, Aurelie is forced to seek help from the last place she ever imagined. Desperate, she forges a second and far more dangerous bond with Severin, a demon she can hardly trust, but who claims to know how to end the war for good.

With their lives and fates entwined, Aurelie, Yuriel, and Severin must team up to hunt down a cure capable of turning demons back into humans. But the more they learn about one another and the deeper their relationships grow, the more Aurelie begins to question the war and her place in it. With both of her bonded on opposing sides, she’ll have to make a choice: continue to stand with the angels, or risk everything by trusting a demon.