1971年上映，达里奥·阿基多执导，由Michael,Brandon,Mimsy,Farmer,Jean-Pierre,Marielle,Francine,Racette等主演的灰天鹅绒上的四只苍蝇在其它发行， 豆瓣评分和口碑都很不错，灰天鹅绒上的四只苍蝇手机在线观看等资源均是网络收集而来。

　　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...