Joker: Folie à Deux continues the bleak story about Arthur Fleck (Joker) and his spiraling from misunderstood recluse to deluded sociopath. The film makes use of textbook forensic psychology, melancholic musical performances, and deep dissections of Fleck's psyche to pull audiences into a genuine curiosity about whether there is anything redeemable about the most realistic Joker depicted on screen.