From the Publisher: The Imaginarium Geographica. "What is it?" John asked. The little man blinked and arched an eyebrow. "It is the world, my boy," he said. "All the world, in ink and blood, vellum and parchment, leather and hide . It is the world, and it is yours to save or lose." An unusual murder brings together three strangers, John, Jack, and Charles, on a rainy night in London during the first World War. An eccentric little man called Bert tells...

When, in 1931, there is a breach between this world and the Archipelago of Dreams, John and Jack, two of the Caretakers of the Imaginarium Geographica, must race through history using a time travel device left by Jules Verne, and discover the identity of the Cartographer.