Marvel is really taking their precautionary anti-spoiler campaign seriously. The entertainment studio behind the major upcoming blockbuster, Avengers: Infinity War, has released a PSA video starring some of the film's main actors and warns against spilling the beans on any details they might see in one of the limited screenings now taking place.

This latest PSA comes shortly after Infinity Wars directors the Russo brothers released an initial letter to fans via Twitter pleading that early viewers don't spoil the culmination of two years' work for fans prior to the movie's global release. "We will be visiting fans all over the world screening only a limited amount of selected footage from the film in order to avoid spoiling the story for future viewers," the letter from the directors read. "We will not screen the film in its entirety until the Los Angeles premiere shortly before the film’s global release. Everyone involved with the film has worked incredibly hard for the past two years maintaining the highest level of secrecy." 

Now they're doubling down on their warnings with a comical video that has some star-studded cameos.

Actors like Robert Downey Jr., Chris Pratt, Mark Ruffalo, and more appear in the interrogation-style video where they are presumably being grilled on movie details. Pratt at one point says, "I can't say for sure...anything. But I can say...nothing," giving a suspenseful pause for extra dramatic effect. Watch it up top. 

As hype for Infinity War reaches palpable levels of fanatic obsession, this PSA is the Russo brothers' last ditch effort to keep the spoilers at bay. Like their initial letter to fans, the video ends with the menacing hashtag: #ThanosDemandsYourSilence. 

Avengers: Infinity Wars is out in theaters on April 27—so just hang in there and blacklist all the phrases you have to so you can stay spoiler-free.