A Good Horse [Hardcover] for $8.11

From School Library Journal Gr 6-8–Eighth-grader Abby Lovitt loves caring for her family's nine horses. Her favorites are Jack and Black George, though she runs the risk of losing both. Black George is an excellent jumper, and after he and Abby win first place in a contest, he is sold for a considerable profit. The family receives a series of letters from a private investigator indicating that Jack's mother fits the description of a stolen horse, meaning that she might have been sold to them without the true owner's permission.