History Channel's hit show Vikings is generating so much interest that episode 6 -- which is set to debut on Thursday -- has been leaked online. Naturally, we went to check it out... so what did it reveal?

(WARNING: The following post contains spoilers!)

The old saying goes that the best way to neutralize the enemy is to make him a friend. And that's exactly the case with Jarl Borg -- he'll be returning to the once-sacked city of Kattegat to make an interesting proposition to Ragnar Lothbrook... who has now been fortified, thanks to the reappearance of his beloved son Bjorn.

Meanwhile, back in England, King Horik enlists the aid of Ragnar to get revenge on King Ecbert and his men for the massacre that occured after Ragnar left to reclaim his city and save his family. "I intend on getting revenge on King Ecbert. I think we should go back to Jarl Borg. We cannot go west without his ships," Horik stated. This comes as a surprise to not only fans but Ragnar, too, because Horik had previously said to the Earl of Kattegat that he did not trust Borg the way Ragnar couldn't trust Rollo. And because of that, Ragnar had to uninvite Borg to raid with them in the West.

But bygones will be bygones... at least when it comes to sacking England, which -- if the show stays true to the Ragnar legacy -- will see Rollo become King before it's all over (remember, Rollo is the forefather of the current Kings and Queens of England -- which means that baby Prince George is related to Ragnar Lothbrook!).

Ragnar's return to England will not be met without controversy, though, as Princess Aslaug warns him not to go.

Finally, to add more bees to the honey, when Lagertha returns to her husband -- sans Bjorn -- she's not exactly welcomed with open arms... especially once her new husband finds out where she's been!

The new episode of Vikings airs Thursday at 10 p.m. EST on The History Channel. Check your local listings for channel.