Earth is twenty-one years older than the home planet they originally left, and the Marines need time to retrain and readjust – time they do not have, due to the bizarre disappearance of a detachment of their brothers- and sisters-in-arms. It is a mystery, but there is a starting point: an ancient wormhole threading through the Sirius system.
Whatever waits on the other side must be confronted, with stealth, with force, and without fear – be it an ancient enemy or a devastating new threat.
The Marines are heading into the perilous unknown . . . and what transpires there could reshape the universe for millennia to come.
Ian Douglas is the author of the popular military SF series The Heritage Trilogy, The Legacy Trilogy, and The Inheritance Trilogy. A former naval corpsman, he lives in Pennsylvania.