Tudo bem, estou postando esta resposta, mas o crédito vai para o Frock para encontrá-la primeiro.
Esta é a trilogia Tales of the Nine Charms de Erica Farber e John R. Sansevere, consistindo de (2000), Segredo nas Pedras (2001) e Ilhas da Lua Negra (2004).
Círculo de três:
The first volume in a thrilling new fantasy trilogy in which the characters must fight evil using only their wits . . . and nine special charms.
Walker, ever the class clown, reaches into a fountain and finds the joke's on him when he wakes up in a distant world.
Niko wants to be a warrior, but his master insists he learn the ways of a philosopher. What's the good of that?
Aurora can do simple gypsy magic tricks, but even she doesn't know the true depths of her power.
Drawn together by forces they don't understand, to combat an evil they can't imagine, their only weapons are nine simple charms.
Segredo nas Pedras
Zoe is living the life of a princess in a world she never knew existed, far from her father and stepmother and her California school. The ice-blue charm she found in a fountain back in her old neighborhood must have something to do with her new life and her new good luck. So she’s in no hurry to give up the charm, especially because she thinks it might help her get home–when she’s ready to go.
But Zoe’s pretty blue trinket is one of the legendary Nine Charms and, as its bearer, she is an unknowing participant in an ancient struggle. If she ever hopes to see home again, Zoe must navigate a world of magic that she barely understands. Her every decision will alter the delicate balance between good and evil. And unfortunately, Zoe doesn’t always choose to do what’s right if doing what’s wrong suits her mood.
Ilhas da Lua Negra
Now that you have reached the magical age of 11, it is time for your inheritance. . . .
So begins the note Lila da Gama receives from a distant aunt, and so begins an adventure that will take Lila much farther than Tiger Lily, her aunt’s crumbling estate. She’ll travel to another world, the Islands of the Black Moon, the place where Lila suspects her father disappeared six years earlier. There she must face terrifying creatures, including a beautiful but evil sorceress, who are all after one thing–Lila’s inheritance. Lila refuses to relinquish her precious birthright, until the sorceress says the six words that Lila cannot resist: I know where your father is.
With a little magic, a little science, and a lot of courage, as well as help from an island boy, this spunky heroine sets off to change her family’s fortune and bring her father home.