Ultima Thule is a science fiction novel written by an American writer Dallas McCord 'Mack' Reynolds (1917-1983). The protagonist Ronny Bronston fulfils his lifelong dream of getting a United Planets job that would take him off-world. However, his first off-planet assignment is to find the elusive Tommy Paine, a revolutionary, reputed to be involved in the assassination of an immortal god king on the planet of New Delos...