Amazon.com description: Product Description: Winner of two Hugo Awards, one Nebula Award, and named a Grand Master by the Science Fiction Writers of America, Brian W. Aldiss has, for over fifty years, continued to challenge readers' minds with literate, thought-provoking, and inventive fiction.In the year 2093, human consciousness has expanded to the point that man can now travel to the past using a technique called "mind-traveling." Artist Edward Bush returns from a nearly three-year mind-travel to find that his government has crumbled and society is now under the leadership a new regime. Given Bush's excellent ability to mind-travel, he is recruited by the regime to track down and assassinate a scientist whose ideas threaten to topple everything they've built.This ebook includes an introduction by the author.