Citadel: Diana: Everything we know about release date, teaser, storyline, production and cast

Amazon unveils 'Citadel: Diana,' the latest installment in the Russo Brothers' 'Citadel' franchise, set in Milan, Italy. Starring Matilda De Angelis, the series follows undercover agent Diana Cavalieri as she navigates the dangerous world of espionage. The show launches on October 10, featuring an international cast and complex intrigue.