Bo gets a possible lead on her mother from a vampire. That lead takes her to an inmate on death row named Lou Ann, but it seems to be a false lead. The vampire is then found murdered, and Bo concludes that there is another Fae involved. She uses her Dark Fae contacts to find that the murderer is a Fae named Vex who is a kind of Fae called a Mesmer. She attempts to get help from the Light Fae and is refused. Lauren is forced to betray Bo by The Ash, and her relationship with Bo is damaged severely. Bo then attempts to get answers from and revenge on Vex, but he is more powerful than Bo expected.
—Harriet Jones