Back as Arthur Fleck, Joaquin Phoenix brings the Joker to new depths of darkness in this highly anticipated sequel. Joining him is Lady Gaga as Harley Quinn, a psychiatrist whose life becomes intertwined with the infamous villain. "Joker: Folie à Deux" is a mind-bending exploration of the human psyche, as it delves into the twisted relationship between two iconic characters. Their love affair is a dangerous dance between sanity and insanity, set to a haunting musical score.