It is 1939 and the world is on the brink of WWII. In the Brazilian Amazon, Nazi spies, a member of the British secret service, and a few Brazilians are held captive by natives of an Amazon tribe and a nutcase called “The Advisor” in a maze-like underground city. The wilderness, the confrontations, and the uncertainty of their future are among the things that make this book an enthralling and memorable read filled with suspense and action that will take the reader’s breath away from beginning to end.