New York Times bestselling author Diane Duane concludes the trilogy begun in Starrise at Corrivale and continued in Storm at Eldala. A dark night is set to descend upon humanity. An alien menace looms on the outer reaches of known space while vying factions grasp for control within the settled systems. Gabriel Connor's quest to save the Verge and clear his name leads him to a system ravaged by war and to the ruins of a forgotten alien civilization.