Trouble on the Borderlands — Kenneth McDonald

A year after hunting the towers of Khormur-Dhain, Ethan, Bella, and Selenna have given up the adventuring life and each gone their separate ways. But the past will not let them be, and when Selenna is assigned a difficult mission into the conflicted borderland region where she was born, Ethan and Bella are drawn after her into a mystery that could ultimately lead to a clash between the human kingdom of Arresh and the elvish kingdom of Tal Nadesh. The three companions and their new allies must uncover a hidden threat and the secret of an ancient magic they’d thought behind them, before it consumes the fragile peace within the Widash Valley.