Cloak of Ashes - Cloak Mage, #3

My name is Nadia, and I'm a shadow agent of the High Queen of the Elves. I don't have many friends, but I look after the ones I do have.and I pay my debts. So when Hakon Valborg's teenaged granddaughter Lydia is arrested for the murder of her computer science teacher, I agree to help. But there's more going on here than just murder. Because an ancient enemy of both humans and Elves just might have taken up residence in Lydia's high school.