Now that the Battle for Winterfell is almost upon us, Game of Thrones fans are waiting with bated breath to discover who will and will not survive, with suspected casualties including the now Sir Brienne of Tarth.

Other theories about what may go down include the revival of Ned Stark from the crypt (which was suspiciously mentioned a few too many times in last week's episode) and that Bran could become a white walker.

If you haven't seen it yet, this is the teaser trailer for this week's episode: 

So, understandably, fans have been looking at the teaser images for the next episode with eagle eyes - and their searching has proved far from fruitless, as a mysterious face has been spotted behind Sansa in this teaser picture!

[[imagecaption|| Credit: HBO]]

"EW has new photos the next episode of GoT and WHO IS THIS BEHIND SANSA???" wrote author Alexandra Bracken on Twitter. "I'm not imagining that face am I??"

GoT fans are now speculating about who it could be, and the majority have come to the conclusion that it's the late Petyr Baelish AKA Littlefinger, who finally met his just end at the hand of Arya in season seven.

Check out Sophie Turner's reaction to her little sister's Game of Thrones sex scene:

"I'm convincing myself that person behind sansa is littlefinger but it's watch it be an extra or somethin.... [sic]" wrote Twitter user @lannisterj. "I'm clinging to this theory that he's not dead so bad !!"

And because of the trouble with Littlefinger caused for the Starks, some people were very stressed out at the possibility that he could be making a comeback - albeit a creepy, ghostly one.

Not everyone, however, was on board with the Littlefinger theory, and some fans wrote that the face was simply a mistake that slipped through the net:

"Is it just me who thinks that creepy face behind sansa [sic] in the new still is just an extra who isn't used to not looking at the camera," wrote Twitter user @alaynestoned.

Regardless, there is no such thing as bad publicity when it comes to GoT, and the producers used the stir caused by this picture to release more teaser images from the upcoming episode.

In one image, Sansa and Arya can be seen looking at each other with concerned expressions on their faces:

[[imagecaption|| Credit: HBO]]

In another, Brienne and her unlikely love Jamie Lannister prepare to fight:

[[imagecaption|| Credit: HBO]]

And in the final image, an exhausted Jon Snow can be seen covered in mud:

[[imagecaption|| Credit: HBO]]

Roll on Sunday night!

Now that the Battle for Winterfell is almost upon us, Game of Thrones fans are waiting with bated breath to discover who will and will not survive, with suspected casualties including the now Sir Brienne of Tarth.

Other theories about what may go down include the revival of Ned Stark from the crypt (which was suspiciously mentioned a few too many times in last week's episode) and that Bran could become a white walker.

If you haven't seen it yet, this is the teaser trailer for this week's episode: 

So, understandably, fans have been looking at the teaser images for the next episode with eagle eyes - and their searching has proved far from fruitless, as a mysterious face has been spotted behind Sansa in this teaser picture!

[[imagecaption|| Credit: HBO]]

"EW has new photos the next episode of GoT and WHO IS THIS BEHIND SANSA???" wrote author Alexandra Bracken on Twitter. "I'm not imagining that face am I??"

GoT fans are now speculating about who it could be, and the majority have come to the conclusion that it's the late Petyr Baelish AKA Littlefinger, who finally met his just end at the hand of Arya in season seven.

Check out Sophie Turner's reaction to her little sister's Game of Thrones sex scene:

"I'm convincing myself that person behind sansa is littlefinger but it's watch it be an extra or somethin.... [sic]" wrote Twitter user @lannisterj. "I'm clinging to this theory that he's not dead so bad !!"

And because of the trouble with Littlefinger caused for the Starks, some people were very stressed out at the possibility that he could be making a comeback - albeit a creepy, ghostly one.

Not everyone, however, was on board with the Littlefinger theory, and some fans wrote that the face was simply a mistake that slipped through the net:

"Is it just me who thinks that creepy face behind sansa [sic] in the new still is just an extra who isn't used to not looking at the camera," wrote Twitter user @alaynestoned.

Regardless, there is no such thing as bad publicity when it comes to GoT, and the producers used the stir caused by this picture to release more teaser images from the upcoming episode.

In one image, Sansa and Arya can be seen looking at each other with concerned expressions on their faces:

[[imagecaption|| Credit: HBO]]

In another, Brienne and her unlikely love Jamie Lannister prepare to fight:

[[imagecaption|| Credit: HBO]]

And in the final image, an exhausted Jon Snow can be seen covered in mud:

[[imagecaption|| Credit: HBO]]

Roll on Sunday night!