Jamie is reflecting on her childhood to her therapist. She talks about the times her grandfather would tell her stories about how he was a medic in the war, and the story of how he was attending to a man who was bleeding to death, but had to leave him and deal with a group of men dying on the field – so the man bled to death. Before she was institutionalised, she researched and discovered that the man’s body was never found. These are what led to the night terrors that made her hallucinate and drove her insane.
The night terrors then change from being figments of her imagination, to real life when a killer fitting the description of the man in her dreams goes on a killing spree to find her.