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Official Site: Amazon Prime Video

Citadel is an American science fiction action thriller television series created by Josh Appelbaum, Bryan Oh, and David Weil for Amazon Prime Video, with the Russo brothers acting as executive producers. The six-episode first season premiered on April 28, 2023, with its first two episodes. Critics had mixed opinions on the series.

With a production budget of US$300 million, the six-episode first season ranks as one of the most-expensive television shows. In March 2023, the series was renewed for a second season.

The series will include spin-offs set in the Italian Alps, India, Spain, and Mexico, and in different languages. The Indian series, starring Varun Dhawan and Samantha Ruth Prabhu, will be directed by Raj & DK. The Italian series will be co-produced by Amazon Studios and Cattleya, part of ITV Studios.

The seeds for Citadel were planted by Amazon Studios chief Jennifer Salke, who approached the Russo brothers and their independent studio AGBO about creating an ambitious, global spy show in mid-2018. The series was originally a partnership between AGBO and the screenwriting collective Midnight Radio, consisting of Josh Appelbaum and André Nemec. However, they departed the show during production in 2021 due to creative differences with the Russos, and David Weil took over as the new showrunner. This change of direction led to extensive reshoots in 2022.

Mason Kane and Nadia Sinh has not been a contender in any CBUB matches.