Frost: The Pendulum: Book Three (The Pendulum Cycle)

Cillistra, grieving the death of Michael and the loss of her home, wanders the forest confused and alone. By chance she meets Wil, the only person in the world who could possibly share her loss, and the two of them set out on a journey of healing and redemption. But they are soon pursued by Randy and the cruel Rebecca at the behest of one of the shadowy Immortals, and tracked by the monks of the mysterious Green Abbey. From Michael’s secret mountain fortress to the blasted tundra of the south, Wil and Cillistra must master Wil’s emerging powers and discover in each other the strength to survive in a world where the merciless Immortal known as the Pendulum is stirring from centuries of imprisoned sleep.