The author of Mr. Penumbra's 24-Hour Bookstore talks about his book. This is a novel set in San Francisco and Silicon Valley, where an unemployed web designer stumbles on a quirky bookstore with an unusual inventory of books. Thinking the store must be a front for something larger, main character Clay Jannon persuades his friends to share their technology skills and join him on a literary adventure that takes them far outside the walls of the bookstore. Co-sponsored by Friends of Campbell Library.