Watch Four Flies on Grey Velvet (1971) Actors: Michael Brandon, Mimsy Farmer, Jean-Pierre Marielle, Bud Spencer, Aldo Bufi Landi, Calisto Calisti, Marisa Fabbri, Oreste Lionello, Fabrizio Moroni, Corrado Olmi, Stefano Satta Flores, Laura Troschel, Francine Racette, Dante Cleri, Guerrino Crivello Director: Dario Argento Country: France, Italy Genres: Crime, Thriller, Horror, Mystery Duration: 104 min

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...