Prime Video has unveiled the next installment in the Russo Brothers' Citadel franchise. Titled Citadel: Diana, the new series will star Matilda De Angelis as undercover Citadel agent, Diana Cavalieri. The streamer unveiled the Citadel spinoff during a gala evening presentation of its Italian slate held in the palatial Villa Miani on a hill overlooking the Eternal City. 

Diana will be Prime Video's most ambitious Italian original to date. The six-episode series is set in Milan in 2030, where eight years ago, spy agency Citadel was destroyed by the powerful enemy syndicate, Manticore. Since then, Diana Cavalieri (De Angelis), an undercover Citadel agent, is alone, trapped behind enemy lines as a mole in Manticore," reads the official synopsis. Check out the teaser trailer for Citadel: Diana.