|NEL paperback, 1975. Artwork by Bruce Pennington|
"The time is a distant, infinite future. The place is Earth - a minor planet in a universe enslaved by an alien race. A charge of corruption in their tyrannical regime leads to a threat of human rebellion. For Gary Towler, chief interpreter to the aliens, the situation is desperate. After eons of servitude, he has one chance to free Earth."
My third copy of The Interpreter, I must be collecting them unwittingly - the edition I really want has a Josh Kirby painting on the cover. In the USA The Interpreter was published as Bow Down To Nul, a particular Ace Double edition has a fantastic Emsh painting on the cover.