Tuatha Dé Danann
The Singing Stone is a young adult novel by O. R. Melling that follows a modern-day girl named Kay as she travels to Ireland and travels back to Bronze-Age Ireland. She alongside Aherne of the Tuatha Dé Danann must find the lost treasures of the Tuatha Dé Danann to combat the upcoming invasion. The novel was first published in 1984. It has sold over 25,000 copies.