Phantom Stallion: Wild Horse Island #2: The Shining Stallion - Phantom Stallion: Wild Horse Island First edition

Ever since Darby rescued her wild filly mustang, she's been having a tough time at her grandfather's ranch. And after she accidentally endangers one of his loyal and steady horses, she can't help but wonder if she really belongs on a horse ranch at all. But then a shadowy horse shows up, prowling the grounds at night.