"Vikings" Season 4 episode 20 will mark as the end of the fourth season. The finale has been aptly titled "The Reckoning" as revenge is going to be the key point of the episode. Something else to look forward to in the upcoming broadcast is the debut of Jonathan Rhys Meyers.

"Vikings" Season 4 episode 20 will show Ragnar Lothbrok's sons, finishing what their father started and will try to come through in what will be one of Viking's most historical battles. Together with the Great Heathen Army, brothers Ivar the Boneless and Bjorn Ironheart will face Prince Aethelwulf, the son of King Ecbert.

The results of the fight will persist throughout history and this will pave the way for the arrival of new characters in the period drama. This is how Meyers will be introduced and his appearance in the final episode will prepare his character for a bigger role in Season 5.

Meyers will play as warrior bishop named Heahmund and he has an important part in the next season. There is a story of how the warrior bishop was added to the story.

"I was looking at the history books, and I came across these warrior bishops," show creator Michael Hirst told Entertainment Weekly. "They were crazy! They believed totally in Christianity and the message, and yet, on the battlefield, they were totally berserk."

Hirst said that he found Heahmund an interesting character and thinks that he will be a great rival of Ivar. The show creator added that he sees the character as a wild card and he happens to be portrayed by Rhys Meyers who is a kind of wild card himself.

Additional Spoilers

"Vikings" Season 4 episode 20 spoilers revealed that Prince Aethelwulf will find himself as a target in the Vikings' battle plan while his father King Ecbert remained at the far side, devising his own plan. While it seems that the King of Wessex is going to lose the major battle, he will not be defeated without a good fight.

Definitely, Ragnar's adversary has aged but he is still powerful and will always have some tricks up his sleeve. Thus, he is still capable of protecting himself from the revenge of the Lothbroks brothers.

It was further hinted a death of a prominent character is set to happen in "Vikings" Season 4 finale. There will be lots of surprises, so viewers cannot miss this season ender episode.

Meanwhile, TV Line mentioned that the show has been renewed for season 5 and it will run for 20 episodes. "Vikings" Season 4 episode 20 is airing on Feb. 1 and it will also be on broadcast in the U.S. and Australia via SBS One.