They are the Wraiths: the biggest, most heavily armored starships in the Fleet. They are also the most secret, floating still and silent, deep - deep - in interstellar space, listening to the Spider's psychic communications network, plotting the data in an attempt to locate the home world of the machine gestalt: Warworld Prime, a planet that has never been discovered.A planet some say doesn't even exist.When the test flight of the U-Star Manhattan - the first of a new class of starship with an experimental engine - goes wrong, the seven-person crew find themselves shipwrecked, trapped in the interstitial nothingness that separates our universe from the next. But as the crew start to disappear one by one and the true purpose of their secret mission is uncovered, the survivors make a startling discovery about the eternal void they are lost in forever.They are not alone.