The Heiresses is a family soap with a mystery twist, set in the diamond world. The Saybrooks are a household name. They've been blessed with great fortune but cursed with epic loss. The events surrounding a deadly accident a year ago drove a wedge between the once-inseparable diamond empire heiresses. But when an unspeakable tragedy brings the cousins back together, they create a truly unbreakable bond. They set out to solve the mystery of who wants the Saybrook family dead before one of them is the next target.