Prime Video unveiled the new teaser trailer and new imagery for the highly anticipated Italian series within the world of Citadel, Citadel: Diana and announced that all six episodes of the new spy series produced by Cattleya—part of ITV Studios— and Amazon MGM Studios, and executive produced by the Russo Brothers’ AGBO, will debut exclusively on Prime Video globally on October 10. Citadel: Diana stars Matilda De Angelis (The Undoing) as the central character and also features an international cast, including Lorenzo Cervasio, Maurizio Lombardi, Julia Piaton, Thekla Reuten, Giordana Faggiano, Daniele Paoloni, Bernhard Schütz and Filippo Nigro.

Citadel: Diana is directed by Arnaldo Catinari and developed by Alessandro Fabbri, who is also the head writer, and wrote the series with Ilaria Bernardini, Gianluca Bernardini, Laura Colella and Giordana Mari. Citadel: Diana is produced by Amazon MGM Studios with Cattleya (ZeroZeroZero)—part of ITV Studios—and showrunner and executive producer Gina Gardini, with Riccardo Tozzi, Marco Chimenz, Giovanni Stabilini and Emanuele Savoini also serving as executive producers, and with the support of Italian Ministry of Culture - Directorate General for Cinema and Audiovisual. Anthony Russo, Joe Russo, Angela Russo-Otstot, and Scott Nemes from AGBO, alongside David Weil (Hunters), executive produce Citadel: Diana and all series within the world of Citadel.  Midnight Radio also executive produce.