The actress that plays Nymeria Sand in "Game of Thrones" stars with Kristen Stewart and T.J. Miller in an upcoming adventure-thriller film directed by who? 
Underwater (film):  The film is produced by Chernin Entertainment for 20th Century Fox and stars Kristen Stewart, T.J. Miller, Jessica Henwick, Mamoudou Athie, Vincent Cassel and John Gallagher Jr.. Jessica Henwick:  She is also known for her roles as Nymeria Sand in HBO series "Game of Thrones", X-wing pilot Jessika Pava in the 2015 film "", and Colleen Wing in the Marvel Cinematic Universe, making her debut in the Netflix television series "Iron Fist".
i don't know