PUBLISHED: 09:22, Tue, Sep 15, 2020 | UPDATED: 09:22, Tue, Sep 15, 2020
Vikings season 6B is the second half of the 20-part sixth season which is due to air on History and Prime Video before the end of 2020. At the end of the first half of season six, Ivar the Boneless (played by Alex Høgh Andersen) stabbed his brother Bjorn Ironside (Alexander Ludwig) during the Rus battle. Fans are wondering whether Ivar will switch sides and betray Prince Oleg (Danila Kozlovsky).
The first half of season six came to an end earlier in 2020 and fans have been waiting many months to find out more about the next set of episodes.
Season six part two will be the last-ever set of episodes, and the saga is due to come to an end before the year is out.
At the end of the first half of season six, Ivar had joined Prince Oleg in an invasion on Scandinavia, and he was seemingly victorious after stabbing Bjorn.
However, a new trailer for season six episode 11 showed Bjorn very much alive, and Ivar was shocked to see him make a comeback.
Hvitserk (Marco Ilsø) has already suggested Bjorn cannot be killed, so fans have suggested he may abandon his plan with Oleg and join his brothers in a surprise attack.
READ MORE: Vikings explained: Why did Halfdan choose Bjorn over King Harald?
Vikings season 6B: Fans have a theory that Ivar will betray Oleg (Image: History)
Vikings season 6B: Katya may betray Ivar and report back to Oleg (Image: History)
Many fans have taken to Reddit to discuss the possibility of Ivar's plot twist, as he has always resented his brothers.
PancuterM said: "I don't know what will [be] the outcome of the invasion of Norway but I have some theories:
"a. The Norwegians defeat the invasion, Ivar backstabs Oleg but he is not welcomed back by the Norwegians because of what he did, so he assembles an army and goes to England.
"b. The Norwegians lose, Ivar backstabs Oleg but the conspiracy against him fails and he exiles himself in order to save his life from Oleg's men. He eventually gets to England with an army and tries to conquer it.
"c. The Norwegians beat Oleg's men with the help of Ivar, and they welcome him back. Then Ivar says he wants to go back to England and he does with the help of Harald, Bjorn and others."
Fans have agreed there will be some level of