A young archivist working in the National Archives and his childhood crush accidentally happen upon a priceless artifact--a 200-year-old dictionary that once belonged to George Washington--hidden inside a desk chair. Eager to discover why the President is hiding this important national treasure, the two soon find themselves entangled in a web of deception, conspiracy, and murder that will reveal the most well kept secret of the U.S. Presidency.

"Three friends. Two broken promises. One missing manuscript. As a senior acquisitions editor for Fog Harbor Books in San Francisco, Ingrid Erikson has rejected many a manuscript for lack of defined conflict and dramatic irony -- two elements her current life possesses in spades. In the months following the death of her childhood best friend and international bestselling author Cecelia Campbell, Ingrid has not only lost her ability to escape into fiction...

The secret Catholic organization known as Opus Dei has struck. The elderly curator of the Louvre has been found dead inside the museum, surrounded by eldritch ciphers in invisible ink. It is up to Harvard semiotician Robert Langdon and his French cryptologist partner Sophie Neveu to decode the cipers, and get to the bottom of an ever-widening mystery. They discover that the late curator was the gatekeeper of the "Priory of Sion", a secret society...