The Russo brothers are notorious for keeping their cards close to their chest, having helmed Avengers: Infinity War and Endgame, among other Marvel features, and it sounds like the next Avengers entry will be no different. The directing duo behind the highly anticipated Avengers: Doomsdayand Avengers: Secret Warsare hard at work on the first of their two major MCU event movies and have revealed their plans to keep the production shrouded in a Doctor Doom-style cloak of mystery.