Flavia de Luce was ready for some excitement, but her odious cousin Undine and a murder investigation weren’t exactly on her wish list. When a local recluse, Major Greyleigh, dies after a mushroom-laced breakfast, all eyes turn to Mrs. Mullet, the de Luce family’s beloved cook. Flavia, a prodigy in poisons, is certain of her innocence—and determined to prove it.
Armed with her sharp wit, the ever-loyal Dogger, and a reluctant Undine, Flavia dives into a tangled web of secrets, suspects, and lies. As the case unfolds, she uncovers a truth so shocking it could unravel her very world. Will Flavia crack the case in time, or will this mystery prove too poisonous to solve?