*Game of Thrones season 7 episode 5 spoilers ahead*
In tonight's episode of Game of Thrones, Arya Stark tailed Littlefinger and found a letter he was hiding in his chambers with a Baratheon seal and a signature by Sansa Stark.
We weren't given a good look at it, but enough words could be seen to identify it as the letter Sansa was forced into sending to her brother Robb back in season 1.
Update: Internet sleuths have worked out exactly how the letter reads: "Robb, I write to you with a heavy heart. Our good king Robert is dead, killed from wounds he took in a boar hunt. Father has been charged with treason. He conspired with Robert’s brothers against my beloved Joffrey and tried to steal his throne.
"The Lannisters are treating me very well and provide me with every comfort. I beg you: come to King’s Landing, swear fealty to King Joffrey and prevent any strife between the great houses of Lannister and Stark."
If you recall, Cersei said that she would believe Sansa's is loyalty on the condition that Sansa write to Robb asking him to bend the knee and swear fealty to Joffrey.
So why would this be of use to Littlefinger?
I need to think on this a little more, but presumably Littlefinger had spotted tension between Arya and Sansa and was hoping to lead Arya to further evidence of her sister being out for herself.
Yes, Sansa initially stood by the evil Joffrey just so she could become queen, but also it was pretty clear that she signed her name under duress, so I'm not sure how useful it can really be in Littlefinger's ongoing manipulations.
Game of Thrones continues on HBO, Sky Atlantic and through NOWTV on Sunday nights.
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