“Some species obey the law of conservation of mass, meaning the more rats we kill, the more we hurt it. Others simply regenerate when they shift between forms.” The rats had backed away, but I could see their eyes glinting in the light. I raised my voice. “I know what you’re thinking, and you’re right. If you rush us, we won’t be able to stop you all. Fortunately, this little gun comes with a self-destruct. I flip the switch, and the battery goes critical, vaporizing us all.”

The rats didn’t move.

“You killed Ray to learn about the archive, but you couldn’t bypass the protections on this place.” A vampire couldn’t, but an automaton could. It had smashed the entire library, shattering the spells shielding those books and allowing the vampire to sneak in as mist or rats or whatever. Only one person could have commanded an automaton to do that. “What have you done with Gutenberg?”

Tiny claws scraped wood, glass, and cement as the rats turned in unison and fled into the darkness. I swore and chased after them, following the clicking of their nails and firing at every rat I spotted. I took out four more before we reached the end of the vault.

Rats poured through the rubble, disappearing into a gap in the wall. I continued to shoot, trying to clog the hole with their bodies, but it wasn’t enough.

Lena tossed dead rats aside, exposing a neatly drilled tunnel roughly six inches in diameter. “Where would this lead?”

We were at the edge of the library. I frowned, trying to orient myself and visualize the other buildings on campus. “I’m not sure.”

Lena moved cautiously into the hole. I followed her through the sloping tunnel, which emerged at the base of a rectangular corridor. Light from grates overhead revealed steel pipes running along the wall. I flipped off my flashlight and grabbed my copy of Alice. A quick drink from chapter four, and both Lena and I were expanding to our normal size. I pressed a hand to the wall, trying to stifle the mad banter of the Queen of Hearts. I definitely needed to stop using this book for a while.

Smudge climbed up my jacket, resuming his customary place on my shoulder. “Steam tunnels,” I said softly. Even from here I could feel the heat wafting from the pipes. The floor was bare cement, the walls a dingy yellow. “They run beneath most of the buildings on campus.”

The ground was clean. No fur, no droppings, no tiny footprints. “Split up?” asked Lena.