 The moment at which the first half becomes the second is punctuated by the rising score and pan to an otherwise meaningless point of reflected light on an ornament . According to Rostock , the meaning is clear : it marks the spot when Berti 's spree ends and Neal 's rampage begins . Argento uses the shift in focus to comment on the shaping of the film itself , until that moment a typical , " clichéd and remote " giallo . Neal , previously passive , begins to control what happens in his own story , which is more personal with " weight and meaning " . According to Rostock , this structure allows Argento equal scope to play with the narrative while commenting upon it , all without having to deviate from the advancement of plot . According to Kim Newman , the use of a sculpture as a weapon makes literal one of the themes of the film : " art that kills people " . Rostock agreed , saying that as the film is a commentary on art , the only weapon that can end the narrative is art itself . 
