Capella's Golden Eyes

For over a century, the human colonists on the planet Gaia have prospered under the guidance of the M'threnni. But when David arrives in the capital Helixport and makes contact with the aliens, he begins to learn the terrifying truth about them. From that moment on he is in mortal danger, for the M'threnni far from being silent benefactors, may turn out to be the deadliest of cruel dictators.