Vows in Darkness (Dark Romance Thriller Series - Book 1) (en Inglés) - Gloria Penelope

Vows in Darkness follows Flora Vale, a woman who has carefully rebuilt her life after emotional loss and swears she will never lose herself to love again. That decision begins to crumble when she meets Lucien D'Arco...an intense, magnetic man whose presence feels both protective and deeply unsettling.

Their connection escalates quickly into a consuming romance that pulls Flora out of her ordinary life and into the secluded world of Blackthorne Hall, the ancestral estate of the D'Arco family. What begins as an isolated wedding in an old, private house soon reveals itself to be something far more disturbing.

Blackthorne Hall is not just a home, it is alive in ways that defy explanation. The house reacts to emotions, bends space, and seems to remember every bride who has ever entered it. Flora begins experiencing strange phenomena: shifting reflections, whispered voices in empty rooms, and brides from the past who appear trapped within the structure of the house itself.

As the wedding approaches, Flora discovers a horrifying truth: every woman who has married into the D'Arco family has died, or worse, never truly left. The house does not merely witness these unions; it absorbs them.

Lucien, meanwhile, is revealed to be both protector and prisoner of the estate. His bond with Blackthorne Hall is deeper than inheritance, it is a curse tied to a vow made long before Flora arrived. His love for her is real, but so is the danger of what it costs to love within the house's influence.

As reality fractures and the boundary between human and supernatural blurs, Flora is forced to confront the terrifying possibility that she is not just Lucien's bride, but the house's next claim.

The novel ends with Flora still inside Blackthorne Hall, neither fully lost nor fully free, as the house begins to recognize her not as an outsider, but as something it intends to keep.