The Legend of Viking Thunder

In the second book of M. G. Leonard's epic series, young adventurers Sim and Jeopardy embark on a daring quest to find Uncle Emmett, who is missing and fleeing from danger. Their journey involves time travel to Viking Norway and a high-stakes mission to prevent the legendary Gjallarhorn from falling into the wrong hands, threatening the world. Packed with action, adventure, and imagination, this tale can be enjoyed as a standalone or as part of the exciting Time Keys series.