In his first film as writer/director; Dario Argento (SUSPIRIA; DEEP RED; TWO EVIL EYES) single-handedly created the giallo genre and instantly emerged as the filmmaker critics worldwide hailed as 'The Italian Hitchcock.' Tony Musante (TRAFFIC; WE OWN THE NIGHT) and Suzy Kendall (CIRCUS OF FEAR; TORSO) star in this pulse-pounding suspense thriller about an American writer in Rome who witnesses - and is helpless to stop - a brutal assault; the cunning vengeance of a maniac; and the heart-stopping horror that lives - and kills - deep in the dark.

Blue Underground is proud to present this legendary shocker in striking High Definition; remastered from its original camera negative (including recently discovered never-before-seen footage of explicit violence) and remixed in 7.1 DTS-HD and 7.1 Dolby TrueHD. Illuminating Extras include four featurettes with Dario Argento; Oscar(R) winning cinematographer Vittorio Storaro; legendary composer Ennio Morricone; co-star Eva Renzi and much more!