In 1424 Hamlin, Katerina faces threats from all sides. An outbreak of rats has overtaken the town, a mysterious beast of unusual size appears to be stealing away the village's children, and her stepfather, the mayor of Hamlin, is a dark presence inside the walls of her own home. Katerina is determined to hunt and kill the Beast of Hamlin herself before more lives are lost. When Steffan, the handsome but brash duke's son with a less than admirable reputation, comes to town seeking glory and reward, Katerina reluctantly decides he might be the ally she's been looking for--the only person in town she can trust not to be under the influence of her stepfather. But there's more to Steffan than she suspects, and she finds herself drawn to him despite her reluctance to trust any man. Katerina and Steffan must stop the enemy from stealing every child of Hamlin. Will Steffan be able to overcome his own longstanding issues to help the beautiful and brave Katerina? Or will their interference create a worse fate for them all?