Starz has set its main cast for Power Book IV: Force, the third installment in the Power universe. Lili Simmons (Banshee, Ray Donovan), Gabrielle Ryan (The Haves and the Have Nots, Bonding), Isaac Keys (Get Shorty, The Oath), Hightown alum Shane Harper, Kris D. Lofton (Ballers, Empire), Anthony Flemming III (Prison Break, The Beast), Lucien Cambric (Chicago P.D., The Chi) and Tommy Flanagan (Sons of Anarchy, Guardians of the Galaxy Vol.