Ubbe marries Margrethe but decides to share her with his brother Hvitserk. Harald and his brother Halfdan plot with the stranger Egil to find weak points in the defense of Kattegat to invade later. Lagherta sacrifices Earl Jorgesen for the gods to bring victory in the invasion of England. King Aelle commands his army against the Vikings when he realizes the size of the enemy army.
"Revenge" is an episode where Ragnar's death is revenged. Indeed, the little pigs will grunt when they hear how the old boar suffered and King Aelle learns the painful means to die being submitted to the blood eagle. My vote is nine.
Title (Brazil): "Revenge"