Star Wars: Rogue One international trailer shows off Darth Vader, may have revealed prequel's big secret

Eagle-eyed enthusiasts have generated an extremely plausible theory

With just under a month to go until the release of first Star Wars prequel Rogue One, a new international trailer has dropped showing featuring more Darth Vader than we've yet seen.

The film from Gareth Edwards (Godzilla) - which takes place ahead of original Star Wars film A New Hope - will centre largely around Felicity Jones' Jyn Erso, a criminal misfit who becomes entangled in the Rebellion's dangerous schemes.

Rounding out the cast are Donnie Yen, Diego Luna, Forest Whitaker, Riz Ahmed and Ben Mendelsohn who is known to share screen time with Vader as the villainous Krennick.

Eagle-eyed fans have spotted something in the trailer that may signal what the film's big revelation could be.

The moment arrives in a clip showing a young Jyn talking to her mother (Valene Kane) who places a crystal around her neck. "Trust the Force,' she says. Star Wars enthusiasts believe this moment to be extremely consequential, theorising that the crystal bears a huge importance on the franchise's future events (as see in Episodes IV, V, VI and VII).

Why? Because they believe it to be a Kyber crystal, an object used to make lightsabers as well as the thing that makes the Death Star operational.

This revelation would make Jyn a far more important character than just the portagonist of this prequel.

Rogue One: A Star Wars Story is hitting UK cinemas on 15 December, a year following the release of Episode V