In the first teaser trailer for Rogue One: A Star Wars Story, Mon Mothma revealed the first details about the movie’s plot: the Rebels were going after the Death Star plans. But the trailer didn’t include Mothma’s full dialogue. Thanks to a new international trailer, we now know who tipped off the Rebel Alliance.

In the new trailer Genevieve O’Reilly’s Mothma and Diego Luna’s Cassian Andor tell Jyn Erso (Felicity Jones) that it was her father, Galen Erso (Mads Mikkelsen), who sent the Rebels a warning about the Imperial weapons test. We haven’t heard much on Mikkelsen’s character in the film, but during Star Wars Celebration Europe the actor revealed Galen was a scientist who “invented something so beautiful, so fantastic that it might have changed the universe.” This info seemed to suggest that Galen may have helped create the Death Star, and if that’s true it makes the trailer’s new dialogue all the more interesting.

The international trailer has a lot of the same footage from the most recent trailer that debuted during the Olympics, but there are some new full-length shots of the Death Troopers. Sadly no more Darth Vader footage though. Rogue One: A Star Wars Story opens December 16.

Check out the Costumes and Props From ‘Rogue One’: