Black Key Covenant

The brass key burns in Adrian Vale’s hand as a black keyhole blooms over Inspector Mara Quinn’s heart. One wrong move, and the curse inside it will tear her open from the inside. Mara was sent to seal Adrian’s shop—and put him in cuffs. Now the disgraced keysmith is the only one who can keep the curse from claiming her, while the city’s own agents hunt them through streets splitting apart. Every time Adrian touches her, the mark spreads… and the key turns toward the abandoned Quinn house. Beneath the city, Mara discovers the horrifying truth: she isn’t the curse’s victim—she’s the living key meant to unlock the apocalypse. Will she trust the man she was ordered to destroy, or let Adrian forge her into the weapon that ends Crow Harbor?