• The HBO series "Game of Thrones" stars Isaac Hempstead Wright and Max von Sydow as Bran Stark and the Three-Eyed Raven, respectively.

The HBO series "Game of Thrones" stars Isaac Hempstead Wright and Max von Sydow as Bran Stark and the Three-Eyed Raven, respectively. (Photo : Facebook/Game of Thrones)

Following the heart-wrenching "hold the door" sequence in the last episode, "Game of Thrones" Season 6 episode 6 is expected to focus on the Lannisters and Tyrells facing off against the High Sparrow, and Arya's adventure on her new assignment. HBO has released a bunch of pics from the upcoming episode set to air on May 29, Sunday.

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The official "Blood of My Blood" synopsis has also been provided by HBO. "An old foe comes back into the picture. Gilly meets Sam's family. Arya faces a difficult choice. Jaime faces off against the High Sparrow," the synopsis states.

The end of "Game of Thrones" Season 6 episode 5 showed Bran (Isaac Hempstead-Wright) and Meera (Ellie Kendrick) fleeing into the snow as Hodor sacrificed himself to slow down the White Walkers. The preview of the episode along with some prior interviews has led to the speculation that Benjen Stark (Joseph Mawle), "an old foe," is likely to make an appearance.

Benjen was last seen in episode 1 guiding Jon Snow (Kit Harington) to the Wall. It is highly rumored that he will save Meera and Bran in the upcoming episode. The preview of the next episode showing a man on horseback with a flaming flail killing a wight has further added fuel to the rumor, though, the identity of the rider is not clear in the clip.

On the other hand, the upcoming episode is likely to show that Bran will finally witness his father learning Jon Snow's true parentage and making his promise to Lyanna. According to latest report, actor Robert Aramayo, who is playing young Ned Stark, is confirmed to appear in episode 6 "Blood of my Blood." Since Tower of Joy scene was cut abruptly in episode 3, it is highly possible that young Ned will be seen inside the tower in Bran's next vision.

In the recently released preview of episode 6, it seems that Margaery (Natalie Dormer) is about take her walk of shame. However, it is highly speculated that she will be free very soon after being saved by the combined efforts of Lannisters and Tyrells.

Meanwhile, dwelling on her character's prison days, Dormer declared recenly that Margaery's brother will prove to be her best prison mate. The actress was speaking during an interview when she was asked who her character's dream cellmate .

"I mean we're in prison together, so we might as well be in the same cell together to keep each other company," Dormer told Entertainment Weekly.

Watch "Game of Thrones" Season 6 episode 6 promo below: