Street Life

You awake from a disturbing dream, to find yourself in an unfamiliar place. You cannot recall who you are, or why you are here. Your head aches, and your left arm is bruised. It seems that you have acquired amnesia! You're in a dark and damp alley which runs between a tall fence and a wall. A solitary street lamp flickers, and shimmering shadows dance on the floor. Can you get your memory back and everything that goes with it?