The sound of a tire screeching woke me the next morning. I opened my eyes, feeling as if I had only slept for a few minutes, and by the look of my disgruntled bedsheets, I knew why. That dream—it was the most realistic and immersive I had had in a while. And similar to my previous one, I had absolutely no idea what it meant.

I could still hear the voice coming from the cave, begging me to enter. It chilled me, and I pulled the blankets up to my chest in a weak attempt to warm ...