True Blue — Jane Smiley

True Blue is a beauty, a dappled gray, and when Abby gets to take him to her family's ranch, she can hardly believe her luck. The horse needs a home: his owner -- a woman brand new to the riding stable -- was tragically killed in a car crash and no one has claimed him. Daddy is wary, as always. But Abby is smitten. True Blue is a sweetheart, and whenever Abby calls out, "Blue, Blue, how are you?" he whinnies back.

But sometimes True Blue seems...spooked. He paces, and always seems to be looking for something. Or someone. Abby starts to wonder about True Blue's owner. What was she like? What did she look like? One moonlit night, Abby could swear she hears a whisper in her ear: "He's still my horse." Filled with riding scenes and horse details, this newest middle-grade novel from a Pulitzer Prize-winner offers a mysterious and suspenseful almost-ghost story.