In early-'80s Gotham City, living on the margins was rough for socially awkward party clown and failed standup Arthur Fleck (Joaquin Phoenix). One bad day was all that was necessary for him to snap... and the brutal vigilantism that resulted would make him the antihero that an angry and disaffected public had been looking for. Todd Phillips' pitch-dark, Scorsese-redolent take on the iconic DC Comics supervillain co-stars Zazie Beetz, Frances Conroy, Mark Maron, Brett Cullen, and Robert de Niro. 122 min. Widescreen; Soundtrack: English. Two-disc set.