Prime Video's 'Citadel' has announced new cast members for its second season, including Merle Dandridge, Rahul Kohli, and Michael Trucco, who will join returning stars Priyanka Chopra Jonas and Richard Madden. Production is set to begin this year under the direction of Joe Russo, promising to build on the intense action and character complexity of the first season. The series, which centers on the elite spy agency Citadel, will also see the return of Stanley Tucci, Lesley Manville, and Jack Reynor. Additionally, two spin-offs titled 'Citadel: Diana' and 'Citadel: Honey Bunny' are slated to premiere soon, expanding the show's narrative universe. The first season was a significant success, becoming Prime Video's second most-watched new original series outside the U.S. within just 24 days of its release.