Vows Written in Ash

When heiress Seraphina Vale is forced into marriage with Cassian Blackthorn, the ruthless head of a rival crime dynasty, she expects a gilded cage, a cold bed, and a husband who sees her as nothing more than a treaty signed in blood. Cassian is beautiful, brutal, and impossible to read—a man with enemies in every shadow and a reputation for burying anyone who betrays him. But behind the locked doors of Blackthorn House, Seraphina discovers her new husband is not the monster she was warned about. He is something worse: a man who knows her secrets before she speaks them.

As desire turns into a dangerous game of leverage and surrender, Seraphina learns their marriage was never meant to secure peace. Her father sold her to hide a murder, Cassian married her to expose a conspiracy, and the masked rebel haunting the city’s underworld may be closer to her than she dares believe. In a world where love is a weapon, Seraphina must decide whether to destroy Cassian—or burn with him.