"Joker: Folie À Deux" finds Arthur Fleck institutionalized atbr Arkham awaiting trial for his crimes as Joker. While struggling with his dual identity, Arthur not only stumbles upon true love, but also finds the music that's always been inside him.br The film also stars Oscar nominees Brendan Gleeson ("Thebr Banshees of Inisherin") and Catherine Keener ("Get Out,"br "Capote"), alongside Zazie Beetz, reprising her role frombr "Joker.