Joker: Folie à Deux. The 60-second video features Lady Gaga's Harley Quinn visiting an emaciated Arthur Fleck, or Joker, played by Joaquin Phoenix, who is in a mental institution. Before she leaves, she pulls out a red lipstick and smears a clownish grin,

Five years after “Joker” won the top prize at the Venice Film Festival, director Todd Phillips can’t help but be a little nervous about returning with its sequel

EW's exclusive clip from the "Joker" sequel shows Gaga and Phoenix passionately kissing before passing a puff of cigarette between their lips.