This classic science fiction novel by Harry Harrison was originally published in Analog Science Fact-Science Fiction as Sense of Obligation and has been for a Hugo Award. It tells the story of Brion, a man who has just won the prestigious Twenties competition, in which he competed in 20 categories of human activities against entrants from across the globe. However, He is forced to leave his home to attempt to salvage the most horrific planet in the galaxy, Dis. This work is part of our Vintage Sci-Fi Classics Series, a series in which we are republishing some of the best stories in the genre by some of its most acclaimed authors, such as Isaac Asimov, Marion Zimmer Bradley, and Robert Sheckley. Each publication is complete with a short introduction to the history of science fiction.