Sienna Voss is a sharp detective living a double life:by day, she ’ s a stunning ring girl inbrutalunderground fight rings;by night, she ’ s an undercover agent hunting evidence that Vincent Kane, a ruthless werewolf packleader, runs a criminal empire. After months of close calls with zero proof—and forced to eliminate a threat toprotect her cover—she ’ s pulled from the case and replaced by her cutthroat rival. Furious and desperate for one last taste of freedom, Sienna hooks up with a magnetic stranger who ignites something primal inside her. The next morning, horror hits: he ’ s Luka Kane, Vincent’ s son and heir, now the mission ’ s prime target. Fueled by spite and a burning need toprove herself, Sienna worms back into the op. Getting close to Luka is effortless—he ’ s intense, protective, and already bonded to her ona visceral level. But as her probe uncovers Luka ’ s link to her parents ’ death, her passion turns to rage… until shattering truths reveal betrayals far deeper than she imagined.