With Ragnar now king, he faces more foes than ever in Season 3 but out of all the rivals, theres one Viking in particular he should watch out for: Erlendur. The only surviving child of King Horik, his entire family slaughtered during a brawl between the King of Denmark and the legendary Norse ruler, during the Season 2 finale. But following the brutal murder of his family, will Erlendur take his revenge on the new king in the end?