The one who sold the Golden tablet and is now plagued by nightmares.
Stephanie‘s brother.

After selling the tablet he was bedbound and had feverish nightmares. He managed to utter “Every night it’s closer, it feels like someone’s watching.”
The second time we visited Stephen said “Go to the caves beyond the pyramid. Torment awaits if we don’t get the guide, we need the spirit of the green sunlight.”