Phillips tells EW why Arthur made that surprising confession during the film's climax — plus, we reveal what that last shot means for Joker's real identity.

Folie à Deux, Phillips’ new musical Joker follow-up, feels like it knows exactly how ready people were to buy into the first film’s dark power fantasy. Folie à Deux remembers the way theatergoers could see Joker ’s Arthur Fleck as a disaffected victim of the system driven to murder by a deeply broken society.