"Katie lives alone in a stone house on Jacob's Ladder island. The neighboring island of Ringrock houses a secret: a government research facility. And now two agents have arrived on Jacob's Ladder in search of someone or something they refuse to identify. Although an air of menace hangs over these men, an infinitely greater threat has arrived, one so strange even the island animals are in a state of high alarm. Katie soon finds herself in an epic and terrifying battle with a mysterious enemy. As Katie struggles across a dark and eerie landscape, against her is an omnipresent terror that could bring about the end of the world"-- Back cover.