TM

The last person Dean and Sam Winchester expect to appear in the Men of Letters bunker is a mysterious young woman looking for Castiel. But when Castiel reveals she’s Lucifer’s daughter, the brothers refuse to believe she isn’t a threat. Forced to keep her under their watch while Heaven and Hell close in, tensions rise as Dean—already struggling with the Mark of Cain—finds himself drawn to the one person he swore he’d never trust. As secrets unravel and loyalties are tested, Y/N must prove she’s more than the blood running through her veins before both worlds tear her apart.