Wren Ashford is running from a life that nearly broke her. On her first night in a town she chose at random, she walks into the wrong bar the clubhouse of the Ironhawks Motorcycle Club and is claimed on sight by their most dangerous enforcer, a man everyone calls Reaper. Within a week, she's not just under his protection. She belongs to the club, whether she agreed to it or not.But Wren isn't only hiding from the man she escaped. She's carrying evidence that could unravel a lie the Ironhawks have lived under for three years proof that a rival club, the Vultures, was actually behind a warehouse fire the Ironhawks have taken the blame for ever since. As her fragile trust in Reaper grows into something neither of them expected, the truth she's carrying threatens to ignite a war neither club is ready for.

Dante Casteliano was raised to hate the Marchetti name. Elena Marchetti was raised to believe the Casteliano empire destroyed her family. Neither of them ever wanted a wedding ring — least of all from each other. But when two rival mafia dynasties stand on the edge of a war neither can survive, there is only one way to stop the bloodshed: a marriage neither bride nor groom asked for, sealed in blood and old grudges. They agree to the rules. Separate rooms. No interference. A business arrangement, nothing more. None of the rules survive. Behind closed doors, hatred curdles into something far more dangerous — a slow, aching pull neither of them can explain and neither of them wants. Dante is supposed to be the enemy. Elena is supposed to be untouchable. Instead, she becomes the only person alive who sees the man beneath the reputation — and he becomes the one person she was never supposed to trust, and somehow the only one she does. But someone has been pulling the strings on both families for years, feeding the hatred that built this war in the first place — and the man Elena was taught to despise may be the one person who's been protecting her all along. As old secrets surface and a new life begins to grow between them, Dante and Elena must decide whether they will keep living inside a lie built by someone else's betrayal — or burn the whole mafia world down to choose each other, freely, for the first time. The Devil's Vow is a dark, slow-burn mafia romance about forced proximity, dangerous loyalty, and love that was never supposed to survive the war it was born into.