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...
Roberto, a drummer in a rock band, keeps receiving weird phone calls and being followed by a mysterious man.
Four Flies on Grey Velvet is a 1971 giallo film written and directed by Dario Argento.
Roberto tracks him to a deserted theatre and finds the stranger has produced a knife but is killed in the struggle. All the while a third person is taking photographs of the event from a gallery. Robert finds himself blackmailed but the blackmailer is not interested in money. The film was an Italian and French production between the Rome-based company Seda Spettacoli and the Paris based Universal. [wikipedia]