Claire Singer has spent her entire life believing she was just another orphan with no answers about her past. The only clue she has is a silver pendant engraved with a single surname—Singer. Months after Bobby Singer’s death, Dean and Sam Winchester uncover a secret hidden beneath the floorboards of his salvage yard. A secret Bobby carried to his grave. A daughter. Before they can tell her the truth, something else learns she’s alive. Thrown into a world of monsters, demons, and impossible choices, Claire must uncover the truth about the father she never knew while traveling alongside the two hunters who meant more to Bobby than anyone else. As old enemies close in and dangerous secrets come to light, Dean, Sam, and Claire discover that family isn’t always the one you’re born into… Sometimes, it’s the one you fight for. Family don’t end in blood.