迈克尔·布兰登,梅茜·珐玛,让-皮埃尔·马里埃尔,弗朗辛·拉主演的《灰天鹅绒上的四只苍蝇》是一部1971年上映的恐怖片，讲述了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...
