'Citadel': Everything We Know so Far About Amazon's Ambitious Spy Series

The Russo Brothers are two of Hollywood's most influential and in-demand creators right now, after delivering two of the biggest blockbusters of all time in Avengers: Infinity War and Avengers: Endgame. Since Marvel, they have hopped around various streaming services, making some of the biggest movies for them. Their latest work, The Gray Man, starring Ryan Gosling, Chris Evans, and Ana de Armas, was the costliest movie that Netflix has produced to date, and the globe-trotting espionage thriller was a big hit for the streamer. Now The Russos will look to repeat that success with the spy thriller Citadel for Amazon Prime Video, this time in the form of a series.