The cave isn’t entirely dark—the faintest blue light shines from below. “What is that?” “You’ll see.” Brady steps into the cave and holds out his hand for me. “It’s really steep here. If your legs are weak from running, just let me know and I’ll carry you.” “I think I can manage.” My face burns as I take his hand. I’m tempted to trip and take him up on being carried. His hand is softer than I expected, though his grip is strong. It’s strange how his skin can be so normal when there’s so much power underneath. Brady wasn’t kidding when he said steep. The cave may be tall enough to fit us standing, but it’s narrow and so vertical I worry I might slip and tumble all the way to the bottom. My legs burn at each step. I don’t even want to think about climbing out of it. The blue light grows brighter as we descend, and it reflects off the rock like sunbeams at the bottom of a swimming pool. There must be water down here, but I still don’t understand the light.