"A lot of magic," Elli says. "Black magic. We were able to locate ways to pin down other souls tied to the house but -- well, it was a different demon who'd claimed my brother, so it was hard. So we ran out of time and I ... did the same thing Bastien Mayfair had done. I called a lot of people to the house to be a blood sacrifice to my demon so I could keep trying to get my brother back." Her chin jerks up a little. "I'm not proud, but that's how it was."