Wilks was a space marine with a near-fatal flaw: he had a heart. Billie was a child, the only survivor of a far-flung colony outpost. Thrown together in the last hellish night of an Alien invasion, Billie and Wilks helped each other get out alive. Thirteen years later, Wilks is in prison and Billie lives in a mental institution, the nightmare memories of the massacre at Rim seared into her mind. Now the pair get a chance to be reunited. To go back to that outpost where it all happened, to finally end the business between themselves... and the Aliens.