Fortus Shar

Fortus Shar, old, frail, and a former slave, becomes the key to the Emperor's Plan. Kytun breeders are appearing within the galaxy, contaminating human populations. Kytun nest ships have entered Darkspace, searching for hidden paths leading deep within the galaxy of Realspace. The centuries needed to prepare a defense have become decades or less.
Then another appears, seeking to destroy them all . . .