SPOILER ALERT: This article contains pivotal plot points and details of Nemesis , which debuted all eight episodes of its first season Thursday night on Netflix . “I always say to people at Netflix, it’s marriage and mayhem, or it’s mayhem and marriage,” Courtney A. Kemp says of her new series Nemesis , which launched on the streamer Thursday. “It’s both things,” the Power boss adds of the chart-topping L.A. crime drama led by Matthew Law, Y’lan Noel, Cleopatra Coleman and Gabrielle Dennis. While full of the twists, turns, sleights of hand, blood and guts, the fine cloth and clobber that defined the 2014-2020 run of the Starz drama that launched a franchise, Nemesis , co-created by Tani Marole, also reveals layers to Kemp’s work that will probably surprise many of her hardcore fans – in a good way.…