The sequel to 2019's Joker, titled Joker: Folie à Deux, premiered on October 4, 2024. Starring Joaquin Phoenix and Lady Gaga, the film explores Arthur Fleck's life in Arkham Asylum and his complex relationship with Harley Quinn, blending musical elements with psychological depth. Critics have offered mixed reviews, highlighting its ambitious narrative and performances, but it has struggled at the box office.