A surprisingly effective story about horse rescue. While riding bikes in the country, Mel and her grandma see a thin, neglected-looking horse alone in a barren field. Mel returns the next day; seeing that the horse limps and appears to be suffering, she convinces her grandma to call animal control. A few weeks later the horse is rescued and taken to a farm, where he is properly fed and given veterinary and farrier care. Mel wishes she could adopt him, but she realizes without angst that her family doesn't have the resources. Instead, Lucky goes to a therapeutic riding center, where Mel volunteers so she can continue to see him. The horse's neglect and recovery are related without melodrama or blame, and the story shows clearly that Mel can make a difference using appropriate channels. Consciously didactic but not offensively so, the story avoids the traps so many other well-meaning animal-rescue tales fall prey to. The watercolor illustrations are just as straightforward and honest as the text, and, given the economy, this book may well see a lot of use. (Picture book. 5-8)