The Great Upending

Twelve-year-old Sara is living with a rare disease when she and her brother, Hawk, become involved with the mystery of a strange tenant on their troubled farm. The tenant is a children’s-book author, and the siblings devise a risky plan connected to the unfinished final installment of a bestselling series. Their plan is meant to secure a reward from the author’s publisher while they try to uncover the tenant’s mystery.