You've probably seen the "Crypts of Winterfell" teaser for "Game of Thrones" Season 8 by now. I've shared my initial thoughts about it in a previous article. Now, it's time to dig a little deeper into what many people already describe as the most mysterious "GoT" promo clip HBO has ever released.

What follows is a well-researched theory by YouTube channel Talking Thrones that actually makes a lot of sense. It's about House Stark, the ancient Kings of Winter and their connection to the Night King and the White Walkers. If that sounds interesting, let's jump right in!

The secrets in the Crypts

According to Talking Thrones, the Starks and the Night King share a secret connection that dates all the way back to the Age of Heroes when the White Walkers were first created and House Stark founded. That said, it stands the reason to believe that the Crypts of Winterfell that Brandon the Builder built just after the first Long Night, are yet another piece of the puzzle that could connect the Night King and the Starks. After all, this underground cemetery has always been shrouded in mystery and if the new teaser is any indicator, some of their deepest and darkest secrets could come to light by the end of the final season.

In the new teaser, while Jon, Sansa, and Arya are standing in front of their own statues, the cold air or mist starts entering the Crypts.

This could be symbolizing the Night King. But according to this theory, the cold air could be coming out of the statues of the Kings of Winter as they begin to awaken.

Besides, there are some clues in the "A Song of Ice and Fire" books that connect the Kings of Winter and the White Walkers.

The White Walker connection

In "A Game of Thrones," Ned Stark has a rather unusual dream where he is walking through the Crypts of Winterfell.

"He was walking through the Crypts beneath Winterfell, as he had walked a thousand times before," it reads, "the Kings of Winter watched him pass with eyes of ice, and the direwolves at their feet turned their great stone heads and snarled."

The Kings of Winter watching Ned as he walks past them could be a reference to them coming alive, but it is the "eyes of ice" part that really stands out.

Because, you see, the description of their eyes matches that of the White Walkers whose eyes are described as "blue that burned like ice." This seems to indicate that the Kings of Winter statues at the lowest levels of the Crypts are actually guarding the vengeful spirits of the White Walkers that are trapped inside. These statues also have the iron longswords placed across their laps because, as we know from the books, the White Walkers hate iron.

"They were cold things, dead things," Old Nan would say, "that hated iron and fire and the touch of the sun, and every creature with hot blood in its veins."

The Talking Thrones video down below reveals more details about this theory.