Young nightspirit Willa discovers an ancient, powerful magic deep in the forest in the enchanting sequel to Robert Beatty's instant #1 New York Times best-seller, Willa of the Wood.

After being adopted into a human family, Willa is torn between her struggling Faeran clan and her new life with Nathaniel and his children. Not only do her people need a home after their lair was destroyed, the entire forest is under threat from men determined to clear cut the trees and build a railroad. Only Nathaniel's property stands in their way and they will stop at nothing to get him to yield to their demands.

Meanwhile, Willa tries to reconcile her identity as the last living woodwitch--she is the only hope for creating a new lair for her people, but cannot do it alone. But when she strikes up a friendship with Grace, the daughter of one of the loggers, she realizes that the answer to her aching loneliness may be in the last place she expected it.

When Willa discovers beautiful, strange fireflies deep in the forest that seem to hold an ancient power, she wonders if they might be the key to stopping the loggers and helping her people heal. But what if Willa has unleashed an ancient, angry force that she has no power to stop?