Under The Staircase Books: 2 books

"So, you're the ones..." A mysterious package appears just as Maya and Nate start helping in their grandparents' store. Inside is just one book: a faded copy of Free to Choose. In a race against time, they must decipher a series of cryptic messages to discover the secret under the staircase....

On a hunch, he pressed down on the ledge, first on 'Hubris' and then on 'Nemesis.' Crrrr.... The click-clackety sound of moving gears creaked loudly on the other side of the wall. Slowly the bookshelf slid aside, revealing a dark hallway. After spending the summer discovering the Under the Staircase...