Cyril Kornbluth is a legendary figure in science fiction. As a teenager in the years before World War II, he wrote prolifically and brilliantly under multiple pennames. After military service he developed a voice distinctive for its commanding intelligence, passion, and wit, displaying it in a string of novels and short stories including his award-winning "The Little Black Bag." His sudden death in 1958, at the early age of 35, marked the end of an era—it was a time when his chosen literary field was contemplating its potential demise. This comprehensive biography tells the story of this remarkable writer and his works for the first time.