Humans call them Monument-Makers. An unknown race, they left stunning alien statues spread on faraway planets throughout the galaxy, encoded with unusual inscriptions. Twenty-third century interstellar archaeologists have already been excavating the enigmatic alien ruins on several planets, looking for signs. But their period is working out. Earth is certainly quickly getting unlivable, and colonizers want to begin with renovating these left behind worlds for human being habitation. Just Richard Wald and Priscilla Hutchins think that the monuments may hold the key towards the survival from the human race.

‘McDevitt reaches his best award-winning style within this intelligent and wide-ranging book.”Kirkus Reviews