When Harvard symbologist Robert Langdon arrives in Prague, he expects a quiet academic conference. Instead, he finds himself entangled in a web of murder, myth, and forbidden knowledge that stretches back to the court of Emperor Rudolf II, a ruler obsessed with alchemy, angels, and the secret of creation itself.

At the heart of the mystery lies Dr. Katherine Solomon, a brilliant scientist whose research on consciousness and the power of thought has shattered the boundary between science and mysticism. When her manuscript vanishes and a professor is found dead his body marked with ancient Hebrew symbols Langdon is thrust into a race through the fog-shrouded streets, cathedrals, and crypts of Prague.

Each clue draws him deeper into a hidden lineage of knowledge linking the Golem legend, Kabbalistic alchemy, and the architecture of human reality. As the past and present collide, Langdon must confront a terrifying possibility:

What if thought itself is the force that shapes the world?