when do luke and leia find out they are siblings

Luke and Leia learn they are siblings in Star Wars: Episode VI – Return of the Jedi , during two key moments on Dagobah and on Endor.

On-screen reveal in the movie

• Luke explicitly tells Leia that she is his sister during their conversation on Endor, just before he goes to confront Darth Vader.

• In that scene, Luke explains that the Force is strong in his family and then reveals that his sister is Leia, to which she responds, “I know… somehow I’ve always known.”

When Luke finds out

• Luke first learns that he has a twin sister from Obi-Wan Kenobi on Dagobah in Return of the Jedi , when Obi-Wan explains that Luke was separated from his sister at birth to protect them from the Empire.

• Using that information and what he already senses through the Force, Luke realizes that Leia is his sister before he goes to talk to her on Endor.

In-universe vs. filmmaking side

• In-universe, both of them fully know and acknowledge their sibling relationship only after Luke’s conversation with Leia on Endor in Return of the Jedi.

• Behind the scenes, their sibling twist was not firmly locked in during A New Hope or The Empire Strikes Back and became solidified in the writing of Return of the Jedi , which is why earlier films show romantic tension between them.

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