Mr. Penumbra’s 24-Hour Bookstore by Robin Sloan My Rating : 3 / 5 Set in San Francisco, Mr. Penumbra’s 24-Hour Bookstore, is a bizarre mixture of pop-culture references, high tech, and literature. Clay Jannon, a graphical artist, finds himself unemployed during a tech recession. Finally motivated to get off his couch, he finds employment at Mr. Penumbra’s 24-Hour Bookstore. There are … Continue reading book review: Mr. Penumbra’s 24-Hour Bookstore