There are some places you shouldn’t disturb, places where history lingers. When Rowan travels to England, she finds a remote village, hidden in the shadow of an ancient forest. Vague warnings from the local people aren’t enough to stop her from venturing into the trees, or from picking up a single acorn. It seemed a simple action. But when a stranger emerges from the forest claiming the acorn belongs to him, Rowan finds herself pulled into something both centuries old and deadly.