"Game of Thrones" Season 7 Episode 5 titled "Eastwatch" was one of those transitional episodes that are necessary to set the stage for what's to come. But it doesn't mean that it lacked interesting plotlines. We witnessed some significant reunions, important plans, horrible deaths and a couple of Easter Eggs scattered throughout the episode. But in this article, we are going to bring to your attention a detail so well hidden that you probably missed it -- a detail that can change the course of entire series.

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What is it about?

This detail, just like any other detail in the series, was barely noticeable for a casual show-watcher. However, one thing is certain -- every time Sam and Gilly are reading at the Citadel, something big is about to be revealed.

And the scene in "Eastwatch [VIDEO]" was no exception. While reading the recordings of High Septon Maynard, Gilly stumbled upon information that could change everything.

After asking Sam what annulment is, she goes on to read how this High Septon has done an annulment for Prince "Reggar" and remarried him to someone else at the same time in a secret ceremony in Dorne. Unfortunately, this is all we got since Sam decides it's time to rant about Maesters for ignoring the White Walkers threat. Nice timing Samwell. Then, after picking up some books from the restricted area of the Citadel library, Sam decides to leave Oldtown for good, and we are left to wonder what could happen if he only listened to Gilly.

How it changes everything?

Before jumping into any further analysis, let's discuss who is who in High Septon Maynard's recording.

Reggar is obviously Prince Rhaegar Targaryen, the son of the Mad King Aerys and brother of Daenerys. High Septon annulled Rhaegar's marriage to Elia Martel, and the woman he secretly married is Lyanna Stark.

We already knew that Jon Snow is the son of Rhaegar and Lyanna, but now, thanks to Gilly, we also know that he is the rightful heir to the throne as the legitimate son of the crowned prince. That means that Jon goes before Daenerys in the line of succession and she should be the one bending the knee to him, not the other way around as she so eagerly demands.

Moving on

Since Sam is now sick of reading about achievements of better men, our only hope for Jon to find out about his secret parentage is non-other than a person who revealed this to us in the first place -- Bran Stark. But since Jon is quite busy proving that the White Walkers [VIDEO] exist, it appears that we are going to have to wait next season for his secret parentage to be revealed.