Mr. Penumbra’s 24-Hour Bookstore

Clay Jannon has moved from working as a web designer in San Francisco to the night shift at Mr. Penumbra's 24-Hour Bookstore. Clay soon discovers that the store is more curious than either its name or its owner might suggest. The customers are few, and they never seem to buy anything; instead, they check out large, obscure volumes from strange corners of the store. Suspicious, Clay engineers an analysis of the clientele's behavior, seeking help from his variously talented friends, but when they bring their findings to Mr. Penumbra, they discover the bookstores secrets extend far beyond its walls.