is the nineteenth episode of the fourth season of the historical drama series Vikings , which first aired on January 25, 2017. The episode was written by series creator Michael Hirst and directed by Ben Bolt . Key Plot Features
: The episode features the first appearance of Jonathan Rhys Meyers as the warrior-bishop Heahmund, a character intended to serve as a foil for Ivar in subsequent seasons. Production Elements [S4E19] On the Eve
Vikings Season 4: Episode 19, On The Eve - Historia Magazine is the nineteenth episode of the fourth season
: The episode features notable historical inaccuracies, such as Prince Æthelwulf leading the defense against the Great Heathen Army at a time when he would have historically been dead for several years. which first aired on January 25