The Atlantis Gene by A G Riddle

Summary

ATLANTIS GENE : What would you have done…?

If there appeared to be the possibility that we were not the only human form that evolved from Neanderthal man...
If another species had also developed...
And we had evidence it had developed capabilities an order of magnitude beyond our own...
Technological capabilities created by hands and minds we could not understand, yet alone control.
  
And which lay in waiting...the result of some compelling genetic urge; in the drive that sees the survival of the fittest, a species that could still want to exterminate us.

That would be a threat and knowledge only a few could be allowed to have. And if the key to what those few initiates sought was unwittingly held by a single researcher... Kate Warner, a geneticist researching autism, would be in a race across the planet to save the human race, only protected from the worldwide reach of the secretive Immari by David Vale, a senior  operative with counter-terrorism organisation 'Clocktower'.
  

FACTS – scary stuff, not fiction at all.
www.agriddle.com/Atlantis-Gene/facts