The Lost Symbol May 2026

: Langdon teams up with Peter’s sister, Katherine Solomon , a scientist in the field of Noetic science, while being pursued by CIA Director Inoue Sato . Major Themes & Concepts

: On its first day in 2009, it sold over one million copies, becoming the fastest-selling adult novel in history at the time. The Lost Symbol

The "Lost Word" is ultimately revealed to be the (or the Word of God), specifically hidden within the cornerstone of the U.S. Capitol. The "portal" symbolizes that the true power lies within human knowledge and the potential for enlightenment. : Langdon teams up with Peter’s sister, Katherine

: Features prominent sites like the House of the Temple , the Library of Congress , and the National Cathedral . Capitol

: It highlights the " Apotheosis of Washington ," a fresco in the Capitol Rotunda that depicts George Washington as a god-like figure, symbolizing the "perfecting" of the human mind. Quick Facts

The story unfolds over a single, intense 12-hour period in Washington, D.C..