Emily sat down in an inhabited office in the police department the BAU was currently holed up in. They had been there for hours, chipping away at a case with no leads. She sat down at the empty desk, rubbing her temples. Her head was pounding, and she was starving. She felt pale, and weak, and she was desperate for blood. You walked in looking for her, concerned to see her looking so sick.

You asked if she was okay, and she groaned as she looked up at you. “I need to ask for a really, really weird favor.” She paused, running her hands through her hair. “I need blood.”