High Stakes by Dick Francis

Steven Scott may have been a successful, wealthy inventor with no experience in horseracing, but with the inspired guidance of his trainer, Jody Leeds, and the prowess of a beautiful black hurdler named Energise, he has brought home several wins. But his winning streak is about to come to a fast end when he discovers trouble in his own stables—trouble that could bring about his own termination if he doesn’t watch his step…