Horses of Half Moon Ranch: Third Time Lucky: Book 6

Kirstie and her horse, Lucky, are inseparable. When Lucky shows signs of a mystery illness - and neither the vet, nor Kirstie's brother can identify what's wrong, Kirstie makes a third and final attempt to find a cure for Lucky. She seeks out the legendary horse doctor who lives deep in the Rockies. Will he be able to save Lucky's life?