The Vikings easily overrun the meager forces of King Aelle . In one of the series' most brutal sequences, the brothers capture Aelle and subject him to the "Blood Eagle" execution at the site where Ragnar died.
After much tension between Bjorn Ironside and Ivar the Boneless regarding who should lead, the massive Viking force lands on the coast of Northumbria.
Ubbe and Margrethe marry, but Ubbe agrees to share his bride with his brother Hvitserk. Meanwhile, King Harald encounters Princess Ellisif, the woman for whom he sought to conquer all of Norway, only to find she has married another. Production Context Vikings recap: Season 4, Episode 18 - Entertainment Weekly