Based on PLL author Sara Shepard’s 2014 novel, the project is set in the diamond world, where the Saybrooks are a household name. The family has “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 to solve the mystery of who wants the Saybrook family dead before one of them is the next target.”
Mitchell — who spent seven seasons playing Emily Fields on PLL — next co-stars in Lifetime’s upcoming psychological thriller series You, from executive producers Greg Berlanti (Arrow, Riverdale) and Sera Gamble (The Magicians, Supernatural).