And so we come to the third and final book of the Trigon Disunity, which also includes the first use of the word “trigon”, although the word “disunity” appears nowhere in all three books. The story opens several centuries after the events of Enigma. Earth is now the centre of the Affirmation, which includes several advanced human colonies discovered since the second book. But one political wing of the human race is determined to take war to the Mizari, the “Sterilizers” of Enigma who wiped out humanity back in the last Ice Age (which was then reseeded by a good energy alien, as also described in Enigma). When Empery focuses on the politics of Earth and the United Space Service, and the fight between those who think the Mizari no longer present a threat (their last attack was 60,000 years ago, after all) and those determined on a pre-emptive strike, it’s not bad. It’s less good, however, on the science fiction. The Mizari are the worst sort of Trek super-aliens, and the only really remarkable thing about Empery (which apparently means “absolute dominion”) is how long it drags out its story. It doesn’t at least rely on superhuman intervention by a, er, human being, as Enigma does. Nor is its “good” character a paragon as in Emprise. That the books improve as the trilogy progresses is no surprise, but the initial world-building is too big an obstacle for the story to overcome and the aliens are shit too. Best avoided. ( )

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