Working with her beloved quarter stallion Buster Brown at a horse show competition, Detective Sandra Cameron begins to recover from the shooting that took her partner's life, and nearly her own. Her hard-won peace of mind, however, is shattered by the death of Chet Gundry, a world-renowned "horse whisperer," ladies' man, diabetic, and dear friend. Chet was a superstar in the equestrian universe, until someone spiked his insulin vial and reined him...