Game of Thrones' Season 5 Episode 6 Spoilers: Jaime Lannister to Face the Wrath of Sand Snakes

Now that "Game of Thrones" Season 5 has reached its halfway mark, it's time to start preparing for the endgame. The synopsis of next Sunday's episode hints that a lot of interesting twists and turns are in store for each of the main characters on the show. The episode is titled "Unbowed, Unbent, Unbroken", which is the motto of House Martell of Dorne, and we'll finally see the Sand Snakes, daughters of Prince Oberyn Martell - who was killed last season, getting ready to avenge their father's death.

The Sand Snakes made their first "Game of Thrones" appearance on the 3 May episode, "Sons of the Harpy", where they were shown torturing the captain of the ship who transported Jaime and Bronn to Drone. According to the synopsis of "Unbowed, Unbent, Unbroken", Jaime and Bronn reach their destination, but rescuing the former's "niece" isn't going to be as easy as he had thought, as the Sand Snakes have been anticipating their arrival.

Arya trains; Jorah and Tyrion run into slavers; Trystane and Myrcella make plans; Jaime and Bronn reach their destination; and the Sand Snakes attack. "There's going to be a big confrontation fight scene with Jaime and Bronn with the Sand Snakes in the Water Gardens," actress Keisha Castle-Hughes, who plays Obara, told Variety.

"I think the thing that I'm excited to see, especially with Obara, that she is absolutely a match for Jaime Lannister, which you don't expect. I think it's great because their reaction to us was like, "Oh, these little s–ts, let's get rid of them," and then it's like, "These little girls actually fight really well, whoa!" And then it dawns on them who they're fighting. They realize oh no, these are Oberyn's daughters, they're in trouble," she noted.

Elsewhere, fans will see Arya start her training to become part of the Faceless Men, while "Jorah and Tyrion run into slavers; and Trystane and Myrcella make plans."