Joker: Folie à Deux (2024) is the Joker sequel from the 2019 film Joker, directed by Todd Phillips and co-written with Scott Silver. Arthur played by Joaquin Phoenix reteams with Lady Gaga as Harlequin / Harley Quinn in the film The narrative picks up where it left off with Arthur institutionalised at Arkham Asylum, reuniting with Quinzel — or as we know her today, the Joker. It uses its musical elements to delve alongside the two they found themselves losing their minds. ​.