'Game of Thrones' cast gets emotional in behind-the-scenes documentary

After we bid farewell to "Game of Thrones," HBO plans to air a behind-the-scenes documentary about the show's eighth and final season.

In the trailer, you can see some of the cast crying, including Kit Harington who plays Jon Snow.
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The show ends Sunday after eight seasons.

The two-hour documentary called "The Last Watch" premieres Sunday, May 26.

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