"Northern Hearths" is an exciting book for teenagers, which combines elements of fantasy and adventure genres. The main characters are three children - Kol, Sander and Ruth - who find themselves in the middle of a mysterious world where they are forced to fight against dark forces. They find protection in the form of Northern Burns - magical creatures who are sworn to protect people in the darkest times. Together with the Wards, the children embark on an incredible journey, where they will battle with sinister forces and search for answers to the confusing mysteries of the past. This book is filled with magic, adventure, and unexpected twists that will keep readers on the edge of their seats until the very last page.