The Secret of Secrets
Robert Langdon travels to Prague to attend a groundbreaking lecture by his partner, noetic scientist Katherine Solomon, who is on the verge of publishing a book with startling claims about the nature of human consciousness. A brutal murder throws the evening into chaos, and Katherine vanishes along with her manuscript.
Hunted through Prague's streets by a chilling assailant who styles himself after the Golem of Jewish folklore, Langdon follows the trail into London and New York. He uncovers a secretive organization built around a clandestine underground facility, run by a former CIA operative, and must weigh cutting-edge science against centuries-old mysticism to find Katherine before her discovery is buried or misused.
The sixth Robert Langdon novel returns to Brown's familiar formula — an overnight chase through real cities, coded symbolism, and a collision between ancient belief and modern science — this time centered on the frontiers of consciousness research.
Harvard symbologist drawn into the search for his kidnapped partner.
Noetic scientist and Langdon's partner whose research on consciousness is at the center of the plot.
The story functions as a standalone entry, as it features a self-contained plot that does not rely on the specific narrative arcs of earlier books in the series.
This installment marks a notable departure from the series tradition by bringing back Katherine Solomon, who previously appeared in The Lost Symbol.
The narrative incorporates research into noetic sciences and the study of human consciousness, including topics such as non-local consciousness and remote viewing.