The Bargainer Series by Laura Thalassa

This is Fine Print First Copy - Similar to Original but not Original.

Dark bargains. Deadly secrets. A love that spans years.
In this hauntingly seductive fantasy romance series, Laura Thalassa weaves a story of a girl with a troubled past and a fae king who never forgot her.

The series follows Callie, a siren with a dark, traumatic past, and Desmond Flynn, the enigmatic Night King known as The Bargainer, who grants favors in exchange for magical IOUs. Seven years after their last encounter, Des returns to collect — but what begins as a debt soon unravels into a sweeping romance caught in a war between realms.

As fae queens disappear and an ancient evil awakens, Callie and Des must confront their past, face a deadly threat, and fight for a love that could either save or destroy them.