Dark Harmony by Laura Thalassa (Paperback)

Darkness is awakening in the shadows of the Otherworld, bringing threats far worse than death. Callypso Lillis carries fae magic that binds her to Desmond Flynn, the King of Night—but that same magic leaves her exposed to the deadly Thief of Souls, a being determined to destroy the world.

The danger is not limited to the Thief. Desmond’s father, returned from the dead, seeks vengeance against his son, forcing the couple into a perilous struggle on multiple fronts. With every passing moment, the forces closing in on them grow stronger, and the stakes have never been higher.

In this fourth and final book of The Bargainer series, Callie and Desmond must confront enemies, unravel sinister plots, and protect everything they hold dear. Survival will require courage, trust, and the strength of their bond as darkness and power collide, proving that in this world, death is no longer the ultimate threat.