Let's get this out of the way from the get-go. This article contains Game of Thrones spoilers, so if you're not up-to-date with what's going on in Westeros, I strongly advise you stop reading this now. But, obviously, when you have watched the latest episode, come back and read it.
Ok, so what's the craic?
Basically, at the end of episode two, every man and his dog is hunkered into Winterfell, waiting for the mother of all battles against the army of the dead and their leader, the Night King.
But while Jon Snow and his crew attempt to keep the White Walkers at bay, the women and children - along with Samwell Tarly - are hiding out in the Stark Crypt.
A solid plan, right?
Well, not according to some fans, who have pointed out the fact that hiding in a tomb surrounded by dead Starks, while simultaneously trying to fight a band of murderous zombies who can bring the dead back to life, might not be such a wise idea after all. Who knew?
Writing on Reddit, u/IgnorantSportsFan said: "'The dead are already here'. That line happens between Dany and Jon, and felt super significant - but we already see the army of the dead, felt it was too obvious to be their reaction to them.
"Then it clicked: The crypt is full of dead people.
"All episode they keep repeating and emphasising how safe it was in the crypt, but its GOTand we cannot have nice things.
The latest fan theory to come out suggests the Stark Crypt may be the worst place to hide. Credit: HBO
"So is it possible we have old Starks rising from the crypts? Or is that too far fetched?
"PLUS we saw in multiple previews Arya fighting in the crypts with her new weapon."
Far from being the perfect hiding place for children - and Sam - could the Stark Crypt actually be the perfect weapon for the Night King and his army?
That's the consensus among fans of the series, who believe there could be some truth in it.
Referencing a chapter in one of the books, a fellow fan wrote: "JON CHAPTER Last night he had dreamt the Winterfell dream again. He was wandering the empty castle, searching for his father, descending into the crypts.
"Only this time the dream had gone further than before. In the dark he'd heard the scrape of stone on stone. When he turned he saw that the vaults were opening, one after the other. As the dead kings came stumbling from their cold black graves, Jon had woken in pitch-dark, his heart hammering.
"I'm sensing another Red Wedding style thing."
Seven seasons on from his untimely death, could we be about to see the return of Ned Stark? Credit: HBO
Another posited the idea that it could actually be a good thing if Ned Stark comes back to life, writing: "Old Starks rising from the crypts has been a theory for a while. I like both versions
"They rise Lord of the Rings style and help fight due to some sort of ancient stark magic thingie, 'A Stark must always be in Winterfell'.
"They rise and slaughter everyone in the crypts red wedding style."
Either way, we will definitely be tuning in to find out what happens to Jon, Daenerys et al - and whether the newly knighted Brienne of Tarthe and reformed Jaime Lannister will ever get it on.
Featured Image Credit: HBO