"Game of Thrones" Season 6, Episode 4 is titled "Book of the Stranger." The episode focuses on several key events and developments, including the return of several important characters and the ongoing conflict between various factions in Westeros.
In the North, Sansa Stark and Brienne of Tarth arrive at Castle Black to meet with Jon Snow and Davos Seaworth. Sansa convinces Jon to rally the Northern Houses to retake Winterfell from the Boltons, and Jon sets off to gather support.
In King's Landing, Margaery Tyrell continues to play a dangerous game with the High Sparrow and the Faith Militant, while Tommen Lannister becomes increasingly powerless.
In Braavos, Arya Stark continues her training as a Faceless Man, but struggles with her identity and her loyalty to her family.
In Meereen, Daenerys Targaryen and her advisors continue to navigate the political landscape of Slaver's Bay, as they work to establish a new order in the region.
In the East, Tyrion Lannister and Varys continue to work together to secure the future of Meereen, as they try to win over the support of the powerful slave masters.
The episode ends with a major reunion between two characters, as Yara Greyjoy and Theon arrive at Meereen to meet with Daenerys, offering their support and ships in exchange for her help in reclaiming the Iron Islands from their uncle, Euron Greyjoy.
In summary, "Book of the Stranger" is the fourth episode of "Game of Thrones" Season 6 and focuses on several key events and developments, including the return of several important characters and the ongoing conflict between various factions in Westeros. Sansa Stark and Brienne of Tarth arrive at Castle Black to meet with Jon Snow and Davos Seaworth, while Margaery Tyrell continues to play a dangerous game with the High Sparrow in King's Landing. Arya Stark continues her training as a Faceless Man in Braavos, while Daenerys and her advisors navigate the political landscape of Slaver's Bay and Tyrion and Varys work to secure the future of Meereen. The episode ends with a major reunion between Yara Greyjoy and Theon and Daenerys, as they offer their support and ships in exchange for her help in reclaiming the Iron Islands.