When blood and shadow collide under a cursed moon, enemies must bind or burn.
For three hundred years, the Solaris family of light and the Umbra syndicate of shadow have waged a secret war across America's cities-angels of death in boardrooms, monsters in back alleys, their feud etched into bloodlines by ancient law.
But on the night of the blood moon, Vexara Solaris breaks the unbreakable: forging a desperate vow with Jax Umbra, the heir she was raised to hate. Their binding awakens a power older than either family-a fusion of light and darkness that terrifies even the immortal Eternals who once wrote the laws of magic.
Now hunted by both their clans and the gods who made them, Vexara and Jax must navigate a dangerous new alliance where every kiss could be betrayal and every vow carries the weight of annihilation. If they fail to master their forbidden bond, their families will die. If they succeed, the world itself may not survive what they've become.
Perfect for fans of enemies-to-lovers, forbidden magic, and high-stakes romantasy, Shadow Vows: Dark Promises delivers ruthless passion, devastating betrayals, and a romance as dangerous as it is inevitable.