Seraphina has spent her life as a lone hunter, tracking and killing demons with surgical precision. She doesn't do relationships. She doesn't do complicated. Until she meets Azrael, an ancient demon with a dark past and a smile that promises sin and salvation in equal measure. Their attraction is instant and dangerous. The bond between them awakens something primal, something that connects them across distance and desire. But Seraphina has bigger problems: a shadowy organization called the Covenant is hunting her, and a cult known as the Ascension is planning to merge the demon realm with Earth. When the Covenant forces her hand, Seraphina discovers the truth she's been running from her whole life; she's half-demon. And worse, the leader of the Ascension is her father, a powerful demon who sees her as his greatest weapon. Now Seraphina faces an impossible choice: help her father complete a ritual that will end the world, or watch everyone she loves die. With Azrael bound to her by a bond stronger than blood, and a community of hunters and misfits depending on her, Seraphina must navigate love, betrayal, and sacrifice. In a world where monsters are real and love is the deadliest weapon of all, she'll have to decide who she's willing to become to save them all.