A bond that burns hot and relentless-equal parts desire, danger, and devotion. They say wolves and vampires don't mix. But the rules don't apply when you're bleeding out on a rock in a Texas canyon. Ryder "Doc" Lowery has lived by rules his entire life-battlefield rules, pack laws, and the iron-clad boundaries that keep the supernatural world from tearing itself apart. As Iron Valor's doctor and a wolf shifter sworn to protect his brothers, he knows exactly which lines can't be crossed. Lucia is one of them. The daughter of the most powerful vampire to ever exist-the King of Kings-Lucia was raised knowing that obedience is survival and defiance comes at a cost. When she makes the impossible choice to save Doc's life, she ignites a firestorm of events that will change not only his future, but her own. What sparks between them isn't just forbidden. It's volatile. World-altering. And once set in motion, impossible to stop. The Supernatural Council is watching. Ancient laws are closing in. And loving Lucia may cost Doc everything-his future, his pack, even his life. Because this bond doesn't just break rules. It threatens the world that made them. Doc is a dark, emotional paranormal romance packed with forbidden fated mates, wolf shifters, vampires, brutal choices, unbreakable brotherhood, and a love that dares fate to come for it... 18+ Readers only, check triggers