This is a collection of thirteen sf stories by eleven authors (Clarke and Bradbury are in there twice) published in Playboy between 1958 and 1971. Given the dates and authors, there's not much beyond the usual two-fisted action story here, though they are almost all decent efforts in that genre. The two standout pieces are the title story by Arthur C. Clarke, which I remember once hearing him read on a borrowed audiotape, and the final story which is also the only really New Wave one in the collection, J.G. Ballard's "Souvenir", better known as "The Drowned Giant". I think I only paid a pound or so for this so I can't really complain.