There is a secret society at Essex Academy boarding school. It's called Society of Seven Eyes (SoSE) and the members are dedicated to exploring the school. They don't damage and they don't steal. But they do enter/break into lost and forbidden areas of the school with the goal of unearthing secrets that will be passed down through the generations. This society has a very deep and very dark influence, and it's the place where Cal Ware feels most at home. He's a sophomore transfer from Mississippi hoping to reinvent himself. 

Those first few pages had me hooked! 
I love the dark academia vibe and the secret society on campus. A club that teaches you how to sneak into buildings so you can explore? Yeah, that sounds really cool to me. This whole story was a wild ride, sometimes to the point of edging on ridiculous, but I still enjoyed the entire thing. 
Unfortunately Luke and Pinky were not my favorites and they both played large roles in the story. 

Can we talk about that ending? Did I miss something? How did

Luke end up losing his arm?! Did he get lost in the tunnels and injure himself so badly that he needed the amputation? I was seriously very confused when I read that part

*Because I was reading an eARC, the formatting was very very off. It made for a difficult reading experience. There were many instances when I had to reread pages to figure out what was happening, and I do think this was due to the formatting and not a fault of the author.