Percy Jackson, and The Betrayal of Olympus

It has been months since Olympus gates closed and the gods vanished. Artemis disappeared leaving her hunt at Camp Half-Blood. Monster attacks have gotten more frequent, killing more demigods-old and young. And with the threat of by the Winter Solstice the gods will fade and the world the demigods have known will disappear and crumble-forever.And a mysterious disease killing off demigods in a mere second, that no one knows what caused it. But Percy Jackson is determined to find answers, follow him along his journey as he discovers the truth and uncovers century old secrets.;