E.C. Tubb 
Quillian Sector [EPUB ebook] 
The Dumarest Saga Book 19

The Cyclan was the greatest concentration of intelligence in a thousand worlds – and yet Earl Dumarest continued to elude it. For too long.Bochner was the greatest hunter of a hundred worlds – a man more than wise to the wiles of beasts and men. And now he was on the trail of the most dangerous and most challenging quarry of his career: Earl Dumarest.While Dumarest searched for lost Terra, the Cyclan and Bochner searched for him. Of all the nightmare worlds of the universe, the hunt this time was to lead to the Quillian Sector.The Quillian Sector: the place where space goes mad…(First published 1978)