"Not long at all," he says. "Which is why I'm trying to seek things out before the situation gets dire. I'd prefer to stay away from the Healers' Guild if I can; the blood there's meant to help people, not to be my own personal snack bar."

He tilts his head. "You're either young or lucky. Up until quite recently it was still rather a nasty business for me."

Serial killers aren't so easy to come across, and he does have standards.