Warner Bros. on Tuesday debuted the first trailer for "Joker: Folie à Deux," starring Joaquin Phoenix and Lady Gaga. The studio screened the preview during a presentation celebrating its upcoming slate of movies at CinemaCon in Las Vegas and released the footage online shortly thereafter. The roughly 2-minute teaser sees Phoenix's Joker and Gaga's Harley Quinn escape from a mental asylum and embark on an intense, twisted romance to the tune of Tom Jones and Sammy Davis Jr.'s "What the World... Read this story
