The library was a bust. It turned out I'd already checked out all the books on the onyx stone, and as far as researching how to tell if someone could murder someone but at the same time not murder someone... Well, the ravens had just blinked at me like I was an idiot when I'd asked for potential books on the topic.

We were missing something, a key part of what Leo was trying to tell me. But what? I had no idea, because apparently I wasn't asking the right questions, at least to ...