Collider’s own Perri Nemiroff is on the ground in London for Star Wars Celebration, and while today’s Rogue One: A Star Wars Story panel was livestreamed, there was one portion of the panel that was kept exclusive to the folks that were in the room: the brand new Rogue One trailer. As Perri was present for the trailer, she’s sent in a full breakdown of what was revealed, including the return of Darth Vader himself. As you may know, director Gareth Edwards’ film is set before the events of A New Hope and revolves around a group of rebel soldiers attempting to steal the plans for the Death Star.

So what’s the word on the new trailer? Here’s Perri’s full breakdown:

The trailer opens up with a few shots of what looks to be a young Jyn Erso running as an Imperial ship soars above before cutting to Felicity Jones as voice over plays; “There isn’t much time. Every day, we grow weaker. While the day grows grimmer, we still have a chance … to make a real difference.” The music begins to ramp up as we catch glimpses of handcuffed rebels being walked through the streets and shots from the first trailer and from the Star Wars Celebration reel including Stormtroopers walking through Scarif, the Shoretroopers, a shot of Orson Krennic flanked by Death Troopers walking across a terrain that looks a lot like the grassy area we see the young Jyn running through at the beginning of the piece. The trailer wraps with the reveal we’ve all been waiting for – kind of. In comes the sound of Darth Vader’s breathing and then we get a shot that slowly pans up to show, not Vader himself, but rather his reflection on the floor. That’s all we get, but it’s chilling and satisfying enough and clearly leaves so much more to be discovered about his involvement in the plot of the film. Overall, this is another fantastic piece of promotional material. Regardless of rumors circulating regarding the tone, just like the first Rogue One trailer, this one definitely has an intense war movie feel to it. It’s packed with Stormtroopers, explosions and other visuals that tease a very visceral intensity, sky high stakes, and a scenario where no one feels safe.​

We don’t know exactly when this trailer will be officially unveiled to the public at large—my guess is it’ll be attached to Disney’s Pete’s Dragon when that film opens on August 12th, so it may be a short while. Regardless, it certainly sounds exciting.

Check out the rest of our Rogue One panel coverage below, and look for plenty more tidbits from Perri as Collider’s Star Wars Celebration coverage continues throughout the weekend.