One of the biggest questions Todd Phillips Joker left viewers with was whether or not Arthur killed his neighbor, Sophie. Of course, in Joker: Folie Deux it is revealed that Sophie is alive, which opens up the question of why didn’t he? 2019’s Joker offered a freshly crafted version of DC‘s most famous Batman villain. It’s no surprise the movie had a much darker tone than many other comic book character-based films. Part of the movie’s intrigue is in how it leaves answers up to the imagination, which includes a number of questions left in Joker: Folie Deux.