Il buio uccide

The concept adds a supernatural layer to the thriller, but I'm curious whether this was inspired by real-world fears or mythologies.

The book blurs the lines between science fiction and horror, which kept me guessing about what was really happening. How did others interpret this balance?

There were moments where the story slowed down to deepen character development, then quickly ramped up again. I wonder if this was planned to enhance the emotional impact.