In a Dutch scientific laboratory, a groundbreaking program is created that allows hypnosis specialists to uncover a person’s hidden past. The memories of a married couple who volunteer unfold on giant screens, revealing layer after layer of their previous lives as the truth creeps dangerously close to their present existence. Cussel traces their souls across ages, beginning with their primitive forms as Boa and Anaconda in a harsh prehistoric world. Later they reappear as a Dutch count and a striking woman who defends the Low Countries against a frightening plague of “flying bats.” Their journey carries them further into early American history, where they return as a French assassin and an irresistible prostitute whose lives collide with fate. Their darkest rebirths surface within Hitler’s Third Reich, where they take on influential roles amid the turmoil of the era. The novel becomes a meditation on time, identity, and the uncanny puzzle of human existence. Cussel weaves history, fantasy, and psychology into a story that lingers long after reading, pushing the boundaries of Dutch literature with bold imagination.