A collection of twenty classic short stories by Isaac Asimov, author of the Foundation series, featuring the definitive version of "Nightfall". From one of history's most influential writers of science fiction comes this collection of twenty short works of fiction, arranged in order of publication from 1941 to 1967. Compiled by Asimov himself, who prefaced each story with an introduction.

Two minutes before he disappeared forever from the face of the Earth he knew, Joseph Schwartz was strolling down the pleasant streets of a Chicago suburb, thinking about his family, He was a simple man, a kind man, a practical man not given to wild flights of imagination. So when he saw the old Raggedy Ann doll lying in his path, he merely smiled and lifted his foot to step over it... That was the only thing he remembered. He did not know that it marked the last act of his life on this earth - and the beginning of a terrifying journey into a strange new world where the twentieth century was already ancient history.

A collection of essays by a master of science fiction is devoted to a discussion of the nature, characteristics, and function of science-fiction writing, including information on authors, works, and themes