Amateur detective. Master poisoner. Eleven years old. When Flavia finds a dead body at her family's decaying British manor house and her father is accused of murder, she dives into her own wild and fearless investigation, unearthing long-held family secrets and pitting herself against the true murderer. A little genius goes a long way. Based on the internationally renowned and New York Times bestselling The Flavia de Luce mystery book series.