When Twilight Falls

This is the oficial introdution for When Twilight Falls. Not the tiny blurb we are all given.

When the TeckSpire Company discovered Sayerass they found a world with a truly human population stuck in an eternal middle-ages. The planet had many more surprises in store, for the inhabitants pre-dated Humanity by a good million years. With all the knowledge of Terran science there was no way it could exist. That did not stop the Company from exploiting the local slave owning society.
Reginald Fairly was new from Earth, a junior executive on the fast track to success. He was a good man, but harboured a terrible secret that kept him awake all night in his own private nightmare. He had no compulsion about buying a young slave girl called Sara to help appease his inner demons, even if he had to pull her down into his own personal nightmare.
Sara would have to choose whether to trust the strange alien with sinister secrets or betray him. But to help him the innocent child would have to learn to lie, steal and kill.
With the knowledge of the mysterious planet’s existence leaking out, various factions converged, each with their own agenda. Some wanted to take it for themselves, some to strip-mine the world and enslave the survivors, and some to blow the obscenity from existence and make way for Terran racial supremacy. But the last faction only wanted to feed.
To save the world Reg would have to choose wisely. For in a world without good there was still plenty of evil, and no one was who they seemed to be. Could he trust the saintly Sister Maria of the Temple of Mercy? But even she had surprising talents and an agenda of her own. What about the doctor, a woman who hid her past, allegiance and even her very name, but she did have amazing power. Could he afford her help, and would the price be his soul? Did he have a choice? Or Geo Trace, an ex circus strongman and amateur archaeologist, searching for the astounding secrets that lay hidden for billions of years beneath Sayerssian soil.
Perhaps the secret to saving Sayerass lay in an almost forgotten cell in the capital’s sinister Citadel. Or in a cosmic junk yard halfway across known space waiting to be born. Or perhaps it lay in Sara’s courage and love.
Only one thing was certain, the tides of cosmic war were approaching the forgotten world, nothing could stop it and very little would survive the onslaught.
For when twilight falls on the longest night of the year, and the oldest ones emerge to feed, mankind shall become but a legend.