Four Flies on Grey Velvet

Four Flies on Grey Velvet (Italian: 4 mosche di velluto grigio) is a 1971 giallo film written and directed by Dario Argento. The film concerns Roberto Tobias (Michael Brandon), who accidentally kills a man and is then tormented by someone who witnessed the event. The film was an Italian and French production between the Rome-based company Seda Spettacoli and the Paris-based Universal Productions France.