Libro segundo de la serie Los héroes del Olimpo Tres amigos. Una misión de locos. Y un enemigo con poderes sobrehumanos. ¿A qué juegan los dioses del Olimpo? Gaia, la madre Tierra, está despertando a un ejército de monstruos para acabar con la humanidad… y ellos se entretienen mareando a los semidioses, los únicos que pueden derrotar sus perversos planes. Ahora han mandado a Percy al campamento Júpiter casi sin recuerdos y con la inquietante sensación de que él, el griego, es el enemigo. Por suerte, contará con el apoyo de Hazel, una chica nacida hace más de ochenta años, y de Frank, un muchacho torpe que todavía no sabe muy bien cuáles son sus poderes (ni si los tiene). Juntos deberán emprender una peligrosa expedición para liberar a Tánatos, el dios de la muerte, de las garras de un gigante… ENGLISH DESCRIPTION Percy is confused. When he awoke after his long sleep, he didn’t know much more than his name. His brain-fuzz is lingering, even after the wolf Lupa told him he is a demigod and trained him to fight. Somehow Percy managed to make it to the camp for half-bloods, despite the fact that he had to continually kill monsters that, annoyingly, would not stay dead. But the camp doesn’t ring any bells with him. Hazel is supposed to be dead. When she lived before, she didn’t do a very good job of it. When the Voice took over her mother and commanded Hazel to use her “gift” for an evil purpose, Hazel couldn’t say no. Now, because of her mistake, the future of the world is at risk. Frank is a klutz. His grandmother claims he is descended from ancient heroes, but he doesn’t even know who his father is. He keeps hoping Apollo will claim him, because the only thing he is good at is archery. His big and bulky physique makes him feel like a clumsy ox, especially in front of Hazel, his closest friend at camp. He trusts her completely-enough, even, to share the secret he holds close to his heart. Beginning at the “other” camp for half-bloods and extending as far north as the land beyond the gods, this breathtaking second installment in the Heroes of Olympus series introduces new demigods, revives fearsome monsters, and features other remarkable creatures, all of whom are destined to play a part in the most important quest of all: the Prophecy of Seven.