War of the Griddons

The last book of the Ambassadors of Orealis trilogy Kali has always felt the country's moods-a weathered tug when glaciers shift, a whisper when the old stones remember. When his grandfather is spirited away and screams echo that "the Griddons are hatching", Kalli finds journals, a warming seeing stone, and a buried lineage: his grandmother was Huldufolk. Thrust into a collapsing secret world, he must convince Queen Borghildur and a fractured Hidden People to stand openly with humans and alien Ambassadors against creatures that use Iceland's geothermal heart to birth invasion. As Griddon queens work to tear a hole in reality and Morphytes promise ''evolution'' through violence, Kalli, Erik, and Finna race across haunted glaciers and sunken shipwrecks to sever the portals. With time bleeding away and betrayal closing in, Kali must become the bridge his family never expected-or watch Earth fall to an ancient, unstoppable swarm.