After 20 years, a vanished space voyager returns to Earth bearing a
dangerous truth that will alter the universe in this powerful,
thought-provoking science fiction classic from one of the golden age
greats.
Twenty years ago, Asher Sutton vanished somewhere in the star system 61
Cygni, an inaccessible corner of the universe that humankind has thus
far been unable to explore. Now Asher has returned to Earth, having
impossibly survived catastrophic damage to his spacecraft. But the star
traveler is not the same man he was when he began his journey two
decades earlier. He is, in fact, no longer completely human. And he
isn't alone. But he has a message to convey that could have
reality-altering consequences for the human galaxy conquerors who
consider themselves almost gods and for the nearly human androids they
create, enslave, and oppress.
It is Asher's destiny to change everything. His mission has made him a
hero to some, a pariah to others - and a target for determined
time-traveling assassins from the future whose mission it is to silence
him at all costs before everything they cherish is obliterated.
A true science fiction visionary, SFWA Grand Master Clifford D. Simak
infused thrilling stories of time travel, space exploration, artificial
intelligence, and alien contact with powerful, thought-provoking ideas.
An enthralling masterwork of speculative fiction that astonishes while
exploring humanity in all its disparate aspects, Time and Again can be
counted among the prolific, multiple Hugo and Nebula Award-winning
author's most brilliantly imagined and successfully realized creations.
