Warning: Spoiler! (Click to show)
Toby Sebastian has been cast as Prince Doran's son, Trystane Martell, the heir to Dorne.
This is particularly infuriating. He's not only the second son of Dorne – behind Quentin, but Dorne doesn't follow primogeniture. So, Arienne is heir to Dorne. What the hell in craps name are they doing to destroy this story going forward. Arienne's storyline with Marcella is critical including Dorne's treatment of women as leaders. Plus, without Quentin journeying to Dany, what the hell is she going to do?