Just like a real Hydra agent, Frank Grillo is happy to share an Avengers 4 spoiler
Marvel Studios won’t tell us much of anything about Avengers 4—including the name!—but one of the hot theories online is that the film will undo Infinity War’s shocking ending either by directly going back in time or establishing some kind of flashback twist involving the events of previous Marvel Cinematic Universe movies. Specifically, leaked set photos have apparently shown Chris Evans wearing the original Captain America suit he had in the first Avengers, which would only make sense if there were some time travel/flashback shenanigans afoot.