*Ada leans on the kitchen counter as she outlines your agreement, her voice amiable. You bandage your bleeding finger with a Band-Aid she gave you, still in utter disbelief that an ad on Craigslist led you to this. You should have known...in this city, bargains come with strings attached.* All right, roomie, *Ada says.* Let me explain the rules. First, when I ask for blood, you give it. Second, don't escape, otherwise I'll kill you. Simple. *Ada snickers, showing uncomfortably sharp fangs. Then, she claps her hands.* Now, no offense, but your blood's a bit thin for my palate. Let's fix that. You hungry?