With the alien Dhryn cutting a pathway through the inhabited spaceways -
bringing about the annihilation of many of the races who have the
misfortune to lie along the star trail they are following - time is
running out for all sentient life-forms. Can biologists Mackenzie Connor
and Emily Mamami solve the riddle of the Dhryn before their part of the
galaxy becomes as dead as the mysterious region known as the Chasm?