Robert Silverberg

The Book of Skulls is a science fiction novel by Robert Silverberg, which was first published in 1972. It was nominated for the Nebula Award in 1972, and both the Hugo and Locus Awards in 1973.

Three complete novels of mystery in space from Grand Master Robert Silverberg explode back into print for the first time in decades in this thrilling new Planet Stories collection! These extremely scarce tales originally appeared in the legendary Ace Double novel series, and represent a future multiple Hugo and Nebula …