Mr Penumbra's 24-hour Bookstore, Paperback/Robin Sloan

Recession takes Clay Jannon out of the Web-design drone world and into the quirky, charming and intriguing 24-hour Bookstore of Mr. Penumbra, working the night shift. Identifying that no books are actually sold, Clay employs a high-tech analysis of customer behaviour and uncovers an ancient secret. A New York Times bestseller. 'Rollicking... an ode to the beauty of dead-tree books' New York Times.