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The Green Knight is a 2021 epic medieval fantasy film directed, written, edited, and produced by David Lowery, adapted from the 14th-century poem Sir Gawain and the Green Knight. The film stars Dev Patel as Gawain, who sets out on a journey to test his courage and face the Green Knight. It also stars Alicia Vikander, Joel Edgerton, Sarita Choudhury, Sean Harris, and Ralph Ineson.