The mystery at the Kentucky Derby / Marsh, Carole

Grant and Christina investigate the disappearance of a racehorse and two jockeys when they tag along with Mimi and Papa to the Kentucky Derby in Louisville, Kentucky.

While visiting the Kentucky Derby, a group of young friends start piecing together pieces of a puzzle involving a missing horse and missing jockeys.

Grant and Christina investigate the disappearance of a racehorse and two jockeys when they tag along with Mimi and Papa to the Kentucky Derby in Louisville, Kentucky.