Thirty-three short, dangerous visions of ""speculative fiction"" by the best in the field and happily, all original. Contributors include Lester del Rey, Robert Silverberg, Frederik Pohl, Miriam Allen de Ford, Robert Bloch, Damon Knight, Theodore Sturgeon, J. G. Ballard, Roger Zelazny and Samuel R. Delany with a foreword by Isaac Asimov and lengthy introductions of entertaining bios by the editor.