Chill-inducing stories follow a specific emotional arc:

• The hook — open with a specific, sensory detail that pulls the listener into the scene. "It was 3 AM and my phone rang" beats "Something happened to me."
• The stakes — make clear what is at risk. Without stakes, there is no tension. Without tension, there are no chills.
• The complication — things get worse or more uncertain. This is where most amateurs rush. Linger in the difficulty.
• The turn — the unexpected moment that shifts everything. The longer you have built tension, the more powerful it lands.

The turn is where chills happen. It works because the brain has been primed by tension and emotional investment.