"Flavia de Luce has taken on the mentorship of her odious, moon-faced cousin Undine, who has come to live at Buckshaw following the death of her mother. Undine's main talent, aside from cultivating disgusting habits, seems to be raising Flavia's dander, although in her best moments she shows potential for trespassing, trickery, and other assorted mayhems. When Major Greyleigh, a local recluse and former hangman, is found dead from a breakfast of poisonous...