This theory is for the upcoming Season 7 of "Game of Thrones," so it goes without saying that is chock-full spoilers for the show up until this point.

With "Game of Thrones" nearing the end of its epic tale, one has to wonder just how everything is going to pan out in the two remaining, shorter seasons. It is clear that the Night's King is the big bad of the series, but is it possible there is another villain who could emerge? Maybe someone we already familiar with?

Shockingly, I think it might be the show's greatest hero, Jon Snow.

Here is my evidence:

Jon came back from the dead in Season 6 after he was resurrected by the Red Witch, Melisandre. This event left most people so shocked and pleasantly surprised that they overlooked what it might actually have meant.

Here's the thing. I am a writer myself. I spend my time contemplating twists and turns and misdirections on a weekly basis, so I can occasionally identify other writers' attempts to do the same. The writers of "Game of Thrones," particularly, leave little room for filler with a scope of this magnitude, meaning that all the plot points mean something. None of them are wasted, even if some events' impact is less than others.

I am going to assume that an event like a character being resurrected from the dead is one that does not happen for little to no reason. Some might argue that it was merely for shock value since Season 5 was the least climactic season of "Game of Thrones" and it needed a stunning cliffhanger. However, I would like to think that Benioff and Weiss would not simply kill off Jon Snow for shock value, especially since it would make his death rather pointless unless something significant happened when he died.

We do not know too much about the White Walkers, purposefully; the viewers, readers and even the characters in Westeros have been clearly misdirected for most of the series by the exciting political drama between the noble houses. What we do know of White Walkers, though, is that they were created by the Children of the Forest to counter the threat that mankind posed. We know that White Walkers can be killed with dragon glass, thanks to Sam and Jon both doing so. We also know that fire kills wights, the zombie followers of the White Walkers.

Most people already theorized that Danaerys would be the savior of the day since her dragons are gigantic now, and their fire can kill the army of the dead. With Dany able to burn the wights and Jon able to kill the White Walkers, it leaves me with one burning question: where is the drama?

Fans have not watched this show for six seasons only to have Season 7 and 8 end predictably. If the writers intend to shock us, which the cast has already said that they do, I think they will need to pose a bigger threat. This need of an unpredictability leads me to believe that the writers will use Jon Snow as a villain.

We already know the Night's King is the arch nemesis of the series, but if Jon can easily kill him, why is there a need for a Season 8? The cast has also spoken on how fast the plot moves in Season 7, and that it ends on a huge cliffhanger according to Maisie Williams (Arya Stark).

So, then, what is the cliffhanger?

I believe it is Jon being possessed by the Night's King. Jon was dead, even if for a short while. What if the effects of that death still plague him? Since the Night's King can control the dead, it might mean that he can control Jon. The show is chock-full of foreshadowing and Episode 603 has two bits of dialogue that seem to me like foreshadowing:

1. Melisandre asks Jon, "Where did you go?" when he died, implying that something did happen when he died. He responds with "Nothing. There was just nothing." It could be nothing, but the line of dialogue was most likely placed there to imply that on the other side, something did happen to Jon that he does not know about. (An undead infection of sorts, perhaps?)

2. Dolorous Ed asks Jon when he returns, "Is it still you in there?" to which Jon replies, "I think so." This, I believe, is the strongest bit of foreshadowing to support the theory. Ed could have said anything to Jon when he came back from the dead. He could have just been glad or shocked to see him. While it is possible to ask this question simply because the dead come back in the North, I think the writers included it with purpose.

Now, why would the Night's King want to possess Jon? Jon was finally revealed to be the son of Rhaegar Targeryan, and if "Game of Thrones" fans know anything about Targaryens, it is that some of them, like Danaerys, can control dragons. My theory is that once the Night's King possesses Jon, he will use Jon to control a dragon and secure victory. If Jon can seize control of Drogon, then he could potentially use it to secure victory by killing the other smaller dragons.

It has been all but announced that Danaerys and Jon Snow will finally meet, but for how long will they be allies? Will they be allies at all? It is difficult to imagine that Jon Snow wants the throne even though he is the rightful heir. He has always been a reluctant leader at most. It is hard to imagine that he and Danaerys would have anything to be at odds about, meaning they will likely be allies for most of Season 7, so again, little drama.

I believe the Night's King will use Jon to gain an advantage over Danaerys and her dragons, possibly even by killing her or her two smaller dragons. The "good guys" might be able to counter this somehow in Season 8 with Tyrion, who many fans convincingly theorize is a Targeryan himself.

This theory, like many fan theories for the show and its corresponding books, is mere speculation, but I think it would create the kind of drama that Benioff and Weiss are trying to pull off in their last seasons with such an exciting show. Even if my predicted twist never comes, there is no doubt in my mind that "Game of Thrones" is going to thrill us with a big budget, climactic battle before this is all over.

"Game of Thrones" returns for its penultimate season on July 16, 2017 on HBO.