Nathan Goyer

They thought they were fighting a war. They didn't know it was the end of time. In 1945, war rages across Europe, but deep beneath Prague, another kind of battle is unfolding. It's a fight not just for land or power but for the very soul of humanity. Katerina Dubová, a brave journalist turned spy, receives a mysterious gift from a high-ranking Nazi officer-a jewel tied to a terrifying prophecy. Clues draw her deep into ancient secrets hidden within Prague Castle and a clock that may hold the power to save the world .