The Cloak: A Dungeon World Playbook

From publisher blurb: At the edge of the alley, you wait. As the target nears, you wait. Saliva drips from your fangs, and you wait. Breathless. Motionless. Lifeless. You claim your kill as the darkness appears to seep into your very skin. A blink of a moment passes and it is as if you were never there. For those that own the night... become the Cloak!