The Pandava series finale finds heroes Aru, Mini, and Brynne weaponless and thus unable to enter the labyrinth to protect the nectar of immortality from the villainous Sleeper. Although Aru has proven her strength and courage many times over, without Vajra, her celestial lightning bolt, she feels powerless. The recent betrayal of Aru's half sister, Kara, adds to the complexity of Aru's familial relationships and the self-doubt that has plagued her throughout this quest. Seemingly out of options, Aru remembers the IO(F)U coin from god of fire Agni. He gives them one piece of the Sun Jewel, which, when reunited with its two other parts, will light their way through the labyrinth. During the journey to find the remaining jewel pieces, the Pandavas encounter more Otherworld characters from Hindu cosmology who test the heart and soul of each sister in their own ways. Several of these characters possess legacies that have been twisted or forgotten. This thread from earlier books reaches a head during the climax, when Aru must make a fateful decision about immortality and who is deserving of having their story live on. This thrilling closing adventure shines with the strength of sisterhood, South Asian representation, and Chokshi's trademark humor and wit. A deeply satisfying conclusion to a superb, groundbreaking series. (glossary) (Fantasy. 9-13) Copyright (c) Kirkus Reviews, used with permission.