All About Joker: Folie à Deux Starring Lady Gaga and Joaquin Phoenix

Joaquin Phoenix is reprising his role as the Joker and this time, he has a new friend coming along for the ride.

Officially titled Joker: Folie à Deux, the upcoming sequel to 2019’s Joker will feature several big names, including Lady Gaga as Harley Quinn.

Following the original’s success, which included setting worldwide box office records and receiving two Oscar wins, a follow-up film was officially confirmed in June 2022.

Since then, several details have been shared by the cast, including the trailer, which shows Gaga’s Harley Quinn meeting Phoenix’s Joker for the first time.

From the stars to the release date, here’s everything to know about Joker: Folie à Deux.

Who in the Joker: Folie à Deux cast?

Phoenix reprises his role as Joker alongside Zazie Beetz as Sophie Dumond. In June 2022, PEOPLE confirmed that Lady Gaga was in talks to play Harley Quinn. The Hollywood Reporter was the first to share the news, reporting that Gaga’s Harley would exist “in a different DC universe” than the one played by Margot Robbie in Suicide Squad (2016), Birds of Prey (2020) and The Suicide Squad (2020).

Other cast members for the film include Brendan Gleeson, Catherine Keener, Jacob Lofland and Harry Lawtey, whose roles have not been disclosed.

Who is directing Joker: Folie à Deux?

Todd Phillips, who directed the first film, will helm the upcoming sequel. He is also co-writing the script alongside Scott Silver and producing the film with Bradley Cooper (who, of course, previously starred opposite Gaga in A Star Is Born).

Will Joker: Folie à Deux be a musical?

Following Gaga’s casting, PEOPLE also confirmed that the upcoming sequel will be a musical. Hildur Guðnadóttir, who worked on the first film, will compose the music for the new film.

When did filming for Joker: Folie à Deux begin?

Principal photography began in December 2022, with Phillips sharing the first look of Phoenix in character on Instagram. “Day 1. Our boy. #joker,” Phillips captioned the image from Dec. 10.

In March 2023, Gaga was spotted filming outside Manhattan’s City Hall in N.Y.C. alongside hundreds of extras. Dressed in character as the DC Comics star, Gaga was seen wearing an ensemble composed of a red jacket, a black and white patterned blouse, a black skirt and mesh black leggings as well as red clown-like makeup around her eyes.

On April 5, 2023, Gaga marked the end of filming by sharing a photo of herself in costume with the caption, “That’s a wrap ❤️‍🔥 🎬🃏 X, Harleen.” Phillips also confirmed the end of principal production by posting the same snap of Gaga along with an edgy picture of Phoenix in his Joker makeup and a suit.

Is there a trailer for Joker: Folie à Deux?

During CinemaCon in Las Vegas on April 9, the first trailer for the film was unveiled. In the clip, Harley can be seen in what appears to be an insane asylum, greeting Phoenix’s Arthur Fleck. The teaser trailer also features images of Harley an the Joker dancing and singing around during fantastical musical sequences.

When will Joker: Folie à Deux be released?

Joker: Folie à Deux is scheduled to be released in theaters on Oct. 4, 2024.