In the thrilling finale to Mercedes Lackey's New York Times bestselling trilogy, Apex City is safe for now, but within the city barriers, Joy must wage a different kind of war.
Then Josh comes to Joy for help. He fears that Abigail Drift, the head of PsiCorps, will soon use him in her twisted experiments designed to empower PsiCorps–a scheme that's already killed off dozens of Psimons. Joy manages to smuggle Josh to safety, but he cannot evade Drift forever.
As Joy faces ever more powerful Othersiders, she is helped by the most surprising ally imaginable–the same Folk Mage she once met in battle on the train to Apex City. But can Joy trust the most cunning and treacherous of all Othersiders?