Former Agent of Death Madeline Black may have been stripped of her wings but she hasn't lost her determination to protect her city. Despite her having saved Chicago from a vampire invasion, the Agency wants to get Maddy off their payroll permanently. Caught in a turf war between a group of fae and a disturbingly familiar foe, Maddy soon discovers that the twisted plots of her grandfather, Lucifer and his brothers extend even into this unknown realm. Maddy's fate is looking darker than ever.