Paperback
Published May 11, 1992 by Heyne.
Earth is struggling from the ravages of nuclear Death. The leader of the first expedition to Thistledown, an asteroid starship, Garry Lanier, has grown old, bitter, weary, unwilling to live. Suddenly he reunites with General Pavel Mirsky--who cannot possibly exist because Mirsky disappeared with the Way, an endless corrider slicing across space through universes.