The universe is under siege. Every fifty thousand years, a race of sentient
machines invades our galaxy to harvest all organic life-forms. They are the
Reapers.
Two people who know the truth are desperately searching for a way to stop the
cycle: Navy admiral David Anderson and his partner, Kahlee Sanders. They have
uncovered grisly evidence proving that the Reaper threat is real. But in so
doing they have exposed the machinations of Cerberus, a secretive paramilitary
organization, and its mysterious leader, the Illusive Man-putting David and
Kahlee in mortal danger, for Cerberus will stop at nothing to protect its
secrets.
But along the way, they find an unlikely ally in Gillian Grayson, a young
woman with extraordinary powers. Once the subject of horrifying scientific
experiments, Gillian is now free-and beginning to master her deadly abilities.
But after learning that Cerberus was responsible for the death of her father,
Gillian swears vengeance against the group and the Illusive Man-threatening to
unravel everything Kahlee and David are fighting for.