Is this how Daenerys discovers Jon Snow's true parentage in Game of Thrones?

Spoilers are coming, obviously

Words by Jadie Troy-Pryde

We're almost halfway through Game of Thrones season 7 and some of the show's big characters have already been killed off (RIP badass granny Olenna Tyrell). There have been Game of Thrones fan theories about everything from Cersei Lannister's death, to whether Arya is the key to the north's safety from the whitewalkers. But one theory that has already come to fruition is the union between Jon Snow and Daenerys.

Okay, we say union although technically nothing has happened between them (yet) but they did finally meet after all these years in episode 3, The Queen's Justice. Fans have been calling this moment since day one, but following Jon's arrival on Dragonstone theories about their future have been coming thick and fast.

One theory that has gained traction explains how Daenerys discovers Jon's true parentage. In case you need reminding, at the end of season 6 we found out that Jon was not Ned Stark's bastard son at all - he is in fact the son of Ned's sister, Lyanna, and Daenerys' brother, Rhaegar - making him half Targaryen.

But during their icy exchange in the most reent episode, neither Daenerys or Jon were aware that they're actually aunt and nephew. However, Daenerys did agree to let Jon mine the dragonglass that could be the key to defeating the whitewalkers - and this could hint at the big reveal.

George R.R. Martin's A Song of Ice and Fire holds the biggest clue. In A Dance With Dragons, Daenerys had a vision where she met Quaithe, a prophetic shadowbinder.

She told Khaleesi: 'To go north, you must journey south. To reach the west, you must go east. To go forward, you must go back. To touch the light you must pass beneath the shadow.'

When Daenerys asks what she will find if she follows this path, she is told: 'Truth.'

The truth about who Jon really is, perhaps?

One Reddit user is now theorising that 'passing beneath the shadow' could be referencing Daenerys going deep into Dragonstone's caves - 'beneath the castle of Stannis the Shadow' - to find the dragonglass that Jon is after. And if you take a look at the season 7 episode 4 trailer, you'll see the pair of them doing exactly that very briefly if you pause at .21 seconds (you're welcome).

We're well aware by now that Game of Thrones loves a bit of foreshadowing, so could this be a huge giveaway that they're about to discover who they really are in relation to each other?

The only living person who knows the truth at the moment is Brandon Stark. But will he be believed if he spills the beans? Perhaps not, considering that when he arrived at Winterfell he told an utterly perplexed Sansa he was a three-eyed raven and that he thought she looked beautiful the night she was married to, and raped by, Ramsay Bolton. Sensitive chat, Bran.

We're going with the first theory.