"The Wicked King" is the second novel in Holly Black's fantasy series, The Folk of the Air, continuing the story of Jude Duarte, a mortal woman who must find a way to survive and seize power in the treacherous fairy kingdom of Faerie. The story focuses on Jude's efforts to control King Cardan, while also facing betrayal and complex emotions. The work is highly praised for its dramatic plot, deception, and character development within a mesmerizing fairy world.