Twelve-year-old Isaac O'Connor hates visiting his relatives in Ireland. But when his cousin leads him deep into the forest of Knockma on Halloween night, he's swept up by a host of creatures once thought to be myth. Waking the next day in the Faerie Rath of Daithi's Leabha, Isaac finds that ten years have passed in a single night . . . and he's not alone. An impossibly beautiful Aes Sídhe named Sive has been left with Isaac, abandoned in the human world. Together they must stave off formidable hordes of destructive creatures called Fomoire, as they search for a way to send Sive through the Veil: home to the Otherworld. Based on the poem "The Stolen Child" by Irish poet W.B. Yeats.