Download or read book Four-day Planet written by H. Beam Piper and published by . This book was released on 1979 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Four-day planet. Fenris isn't a hell planet, but with 2,000-hour days it alternates blazing heat and killing cold. It breeds a tough person, but when that person is being cheated on his wealth, the planet is ripe for revolution.