You find yourself in a completely blank room, with dull brown walls. There is no exit. Another riddle echoes around the walls. "I have been many, but known to few. I wear many faces, only one is true. Speak my true name, and I disappear. The moment I'm found, I'm no longer here. I live in the shadows, I die in the light. The answer you seek, lies in plain sight. What am I?"