Four Flies on Grey Velvet

Roberto, a drummer in a rock band, keeps receiving weird phone calls and being followed by a mysterious man. One night he manages to catch up with his persecutor and tries to get him to talk but in the ensuing struggle he accidentally stabs him. He runs away, but he understands his troubles have just begun when the following day he receives an envelope with photos of him killing the man. Someone is killing all his friends and trying to frame him for the murders.

• 
  Dario Argento
• 
  Roberto Pariante
• 
  Patrizia Zulini
• 
  Luigi Cozzi

• 
  Michael Brandon
  Roberto Tobias
• 
  Mimsy Farmer
  Nina Tobias
• 
  Jean-Pierre Marielle
  Gianni Arrosio
• 
  Aldo Bufi Landi
  Pathologist
• 
  Calisto Calisti
  Carlo Marosi
• 
  Marisa Fabbri
  Amelia, the Maid
• 
  Oreste Lionello
  The Professor
• 
  Fabrizio Moroni
  Mirko
• 
  Corrado Olmi
  Porter
• 
  Stefano Satta Flores
  Andrea
• 
  Laura Troschel
  Maria
• 
  Francine Racette
  Dalia
• 
  Bud Spencer
  Diomede / Godfrey
• 
  Dante Cleri
  Coffin Salesman
• 
  Guerrino Crivello
  Rambaldi, the Neighbor
• 
  Gildo Di Marco
  Postman
• 
  Tom Felleghy
  Police Commissioner Pini
• 
  Leopoldo Migliori
  Musician
• 
  Fulvio Mingozzi
  Music Studio Manager
• 
  Stefano Oppedisano
  Bearded guy with girlfriend