I hadn’t counted on their being labeled in some code that only Graham understood. It seemed like I had been trying different keys for at least ten minutes, and I wasn’t even halfway through them. I glanced around, making sure nobody happened to be strolling along the path next to me. Finally, the eleventh key slid effortlessly into the lock. I turned it and heard a satisfying click. I was thankful for the emergency lights they left on at night. A lower level seems like a good place for a secret room. I checked behind the front desk. No doors leading down to a cellar. I’d have to check the perimeter. I jogged along the wood-paneled wall, looking for some kind of opening or door. I made it all the way around. Nothing. The longer I was in here, the more likely it was that I would get caught. I walked around the room again, more slowly this time. Maybe there was some kind of lever system, like you pulled on a certain book and it revealed a hidden entrance behind a panel somewhere. There was no way I could try every book in the library, though—I would be here forever.