 Giermani discovers that Berti was obsessed with Neal 's novels , and believes the killings will stop now that Berti is dead . However , Bullmer , who is having an affair with Jane , is stabbed to death while waiting for his lover in a public square . Gianni is haunted by the thought that he missed the importance of something he saw at Berti 's house . He returns to the house and suddenly remembers that he had heard Berti confessing to his attacker : " I killed them all , I killed them all ! " Before Gianni can share this detail with anyone , he is strangled to death from the back seat of his car . 
