In José Rodrigues dos Santos's captivating novel, 'The Last Secret,' a profound mystery threatens to redefine humanity's understanding of its past. The narrative follows Professor Tomás Noronha, a brilliant cryptanalyst, as he stumbles upon an ancient secret with the potential to unravel centuries of established beliefs and hidden conspiracies. From the dusty depths of historical archives to perilous international locales, Noronha finds himself racing against time and shadowy forces determined to keep the truth buried. This meticulously researched and masterfully crafted thriller blends intricate puzzles with high-stakes adventure, inviting readers to question everything they thought they knew about history, power, and the unseen hands shaping our world. Prepare for a journey of discovery where every revelation carries immense consequences.