The explosive sequel to the genre-bending, time-bending YA debut The Upper World—a fast-paced, cinematic thrill ride perfect for fans of Neal Shusterman, Marie Lu, and Jason Reynolds.NowWith her mentor, Dr. Esso, by her side, eighteen-year-old Rhia is determined to make her mark on the hallowed halls of Cambridge University. But the power of the Upper World is becoming an addiction she can’t shake. Even worse, she’s not alone. Someone else knows the secrets of the Upper World. And he’s come to eliminate his newest rival: Rhia.ThenIn 1990s Benin, Serou believes he’s destined to inherit the powers of the Upper World. But instead of being welcomed into his temple as a young adept, he is exiled—only to uncover a conspiracy that has sacrificed dozens of kids like him so one man can stay in power. In his quest for justice, Serou faces a deadly crossroads: a choice that could break the cycle of violence . . . or send him down the same path.In this electrifying follow-up to The Upper World, Femi Fadugba blends real physics with bleeding cool sci-fi action to deliver a thrilling game of cat-and-mouse that only one can win.