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We've Definitely Seen Those Creepy White Walker Spiral Patterns On 'Game Of Thrones' Before—And Fans Have A Theory About Their Origin

HBO // @kania_west/Twitter

Game of Thrones returned Sunday night and the season premiere showed us one of the White Walkers' strangely familiar calling cards.

One of the last scenes from "Winterfell" showed Tormund Giantsbane, Beric Dondarrion, Eddison Tollett, and other survivors from the Night King's assault on the Wall at Last Hearth, the home of House Umber.

The party discovers the body of Lord Ned Umber mounted on a wall surrounded by a spiral of severed human limbs. \

Suddenly, the young lord reanimates as a wight and shrieks before Beric lights him on fire with his sword. Lord Umber shrieks for a while longer before the fire consumes him entirely and he goes silent.

It's that spiral that caught everyone's eyes, though.

We've seen those spirals before. The first time was during Season 1, when the White Walkers arrange a group of wildlings in the same pattern.

The Night King's horses are cut up and arranged in a similar pattern in Season 3. Additionally, the same spirals are seen on the walls of the caves in Dragonstone in Season 7.

No one knows what these spirals mean but they're bound to hold some significance for the Night King, right?

We wager it's this, though:

One theory: The symbol is startlingly similar to the Targaryen crest. Does this mean Rhaegar Targaryen is the Night King?

Whether Rhaegar's the Night King or not, the scene definitely freaked many people out. Let's face it: That Umber boy was creepy as hell.

What's coming down the pike for us next week? Some answers, perhaps? Let's hope.