TV Equals: "It feels like we’ve been waiting for the return of Vikings for a long time. It’s finally back from season 3 and there are a lot of layers to sift through. King Ragnar may have wiped out his enemies at the end of last season, but that doesn’t mean that he and his family are out of danger. The Vikings return to England and learn that King Ecbert has changed the terms of their arrangement. King Ecbert is sly, but he’s definitely underestimating Ragnar."