Vows of Sin: A Sacred Devotion Reverse Harem Mafia Gothic Romance

Heiress and medieval-law scholar Seraphine Laurent refuses to be sold in silk. In a single, defiant bargain, she offers her hand to Calder Voss—the city’s most feared don—on one condition: his sworn brothers must take the vow beside him, and her word must be the law. What follows is a gothic, candlelit war of power and devotion: a covenant written in consent, a house that worships with honesty instead of secrets, and an underworld rattled by a woman who knows how to turn ancient canon into a blade.

As council chambers erupt and shadows move against stained glass, Seraphine and the four men bound to her—strategist, guardian, hacker, and lawyer-priest—build a new kind of family where kneeling is a choice and loyalty is proven in the light. Desire smolders, alliances shift, and every vow is tested against the oldest currencies: truth, courage, and the cost of freedom.

For readers of dark, atmospheric romance who crave high stakes, slow-burn heat, and a heroine who writes her own law.

Categories: Reverse Harem, Mafia Romance, Gothic Romance, Dark Contemporary Romance, Polyamorous Romance, Romantic Suspense

This book contains explicit scenes, violence, and morally grey characters. Reader discretion is advised.