Game Of Thrones Theories: 15 Epic Season 7 Moments Still To Come

12. Jon Convinces Dany

And he won't be doing it alone.

Right now, Dany is fairly skeptical of Jon Snow's claims that the legend of the White Walkers is actually more documentary than epic fantasy fiction series, but something has to change pretty swiftly. She's softened her stance already, allowing him to head into the belly of her home to mine Dragonglass, but that is far from an expression of belief - it's still a political move.

But for Dany to let Jon leave with the Dragonglass, she's going to have to be convinced - particularly because she's lost more allies since he turned up and she could do with the help with Cersei. So presumably, she has

The best theory suggests Jon will find something in the caves, put there by Dany's ancestors that gives her the evidence she's looking for. The smart money would be on a cave mural...