Out-of-work graphic designer Clay Jannon stumbles on an unusual bookshop and impulsively asks for work. Mr. Penumbra’s 24-Hour Bookstore seems innocuous enough, but soon it becomes apparent that there is a strange plot that can’t be contained by the towering shelves of unusual tomes. It will take a love of books, complex data visualization, connections at both Google and Industrial Light & Magic, and a motley crew of friends with unusual skills to complete this quest, and even then the victory may not be theirs. Author Robin Sloan crafts a modern lit-tech adventure, and reader Ari Fliakos brings it to life, honoring the wit, geekery, and enthusiasm that make decoding the secret of immortality hard to resist. The glow-in-the-dark cover helps, too.