The Ugly Little Boy
by Isaac Asimov, Robert Silverberg

Asimov wrote the short story "The Ugly Little Boy" in 1958. But in the novel of the same name, also known as Child of Time, there is much more to the story of the little Neanderthal boy plucked out of time and transferred to the 21st century. Now, Robert Silverberg--in this second collaboration with Asimov--has made this sf classic into an engrossing novel-length tale.