The Chalice of Death by Robert Silverberg (three novels of mystery in space)

Book is new and sealed. \n 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 Award-winning author bridging the explosive, action-oriented science fiction adventures of the early pulps with more introspective themes of the new wave that swept sci-fi in the 1960s.