Joker: Folie à Deux is finally here, and it's certainly a dramatic sequel to the 2019 original. Joaquin Phoenix returns as Arthur Fleck, AKA the Joker, while Lady Gaga steps up as Harley "Lee" Quinzel.
A lot happens in the film, so if you're left scratching your head over any of the key details, we've got you covered with our guide below. In it, we dive deep into the events of the film's third act, so you'll have all your key questions answered – including on what happens to Joker, Harley, and more.
