Castiel stood calmly, his eyes on Regulus' face, ignoring the wand. His voice as firm and calm as before. "I am alone. I am not here to turn you in. I do not know you. I came because I was drawn to your power. If it foreign to me."
Castiel followed the man's gaze. "There is no one that way. It is deserted here. You need to be calm." Castiel had little experience with panicked humans and he was out of his depth here. He hoped if he remained calm the man would pick up on that, would be assured there was nothing to be afraid of.
Perhaps if the man could see better. Castiel raised his hand. A pure light seemed to rise up from the very ground, forcing the shadow back and into nothing as every corner was lit, every tunnel and power pole laid bare.
"Do you see your peruser?" the angel said in his gruff voice.