Mountaintop. Humanity’s last stand, after near obliteration from the Threat Below, by which Jason Latshaw’s epic book is titled. The humbled hundred or so inhabitants of Mountaintop, called the Kith, rely on legend mixed with history of the Apriori, their ancestors who once ruled the earth. The Kith are walled into their home in the sky by fear and the persistent Cloudline that obscures vision of Down Below. Their world is meager and desperate, their society stratified and rigid. In the first few pages, a hard line is drawn between main character Icelyn, the prissy, intelligent Cognate daughter of the Kith’s leader, and Adorane, her Veritas best friend and possible brave, brawny love interest. Segregation and prejudice are accepted here as the way for a fragile existence to survive.