Folie à Deux, and when I asked about Joaquin Phoenix’s Southern accent while he was representing himself in the courtroom scenes, Phillips said this: That was our idea in the script. We put it in, Scott Silver and I.

Folie à Deux." There are a lot of controversial elements to the long-awaited sequel to "Joker," but maybe the biggest one is the reveal that Joaquin Phoenix's Arthur Fleck isn't really the Joker we all know and love.

Folie à Deux ends with Joker meeting his maker, but who really killed Arthur Fleck? Was it the real Clown Prince of Crime or someone else.