The world of Terra is populated by five human clans, known as the Tigers, Birds, Raccoons, Shadows, and Foxes. Long ago, the godlike Patrons gave each clan different magical powers, called “cannys.” Over time, the cannys disappeared—at least for most people. After Jasper, a 15-year-old Fox boy, secretly sets a dangerous shape-shifter free, it takes Jasper’s form and kills its original captors. The Tigers accuse Jasper of murder and take him into custody. DeBarco, the sinister head of the Tigers, persuades Harissa, a Tiger teenager and the only female trainee in the Chame-lion program, to bear false witness against Jasper. Harissa’s testimony is especially convincing because she has a canny that allows her to add thoughts and images to other people’s memories. After Jasper is found guilty, he’s taken to the coliseum to be hanged, but he escapes with the help of his father, Argus, and the shape-shifter, Gallium. In the process, he discovers his own canny—the rare ability to generate and cast a flaming substance called “chasma.” As Jasper journeys onward, he makes even more shocking discoveries about his world, his ancestry, and his fate. Meanwhile, Harissa uncovers troubling information about DeBarco and sets out on her own journey to reclaim her path. DiDesidero’s book is split between Jasper’s and Harissa’s close third-person perspectives, and both are equally engaging. Although some readers, particularly younger ones, may have some trouble keeping the lore and accompanying terms and concepts straight, the ideas themselves are compelling and unusual. DiDesidero supports the fine characterization and intriguing settings with expressive prose: “Harissa lay in a well of gravity so deep that time oozed by. Her limbs had no muscle. The dizzy world had her glued in place like a taxidermy person stuffed with cottony drugs.” It all results in an immersive, fast-paced reading experience.