Time Snake and Superclown

"As the Watcher moves through a series of times and worlds of his own, omnipotent, invulnerable, guarding the Zone against the Alien, he tries to understand why the wraiths, the fragile humans, feel no threat from the universe. And the answer, when he finally learns it, is one which is both tragic and hopeful for the destiny of mankind"--Pg [4] of cover.