Sunstone (Book IV of the Winter Fire Series‪)‬

An uneasy truce between Asgard and Jotunheim has brought Jenna and the Bergans back to Earth, but the tension between Bren and Loki draws in a new threat...one with far reaching consequences. As summer begins at Yew Dales, an unexpected visitor reveals a string of hidden truths, reminding everyone that nothing in this world is set in stone.