Lost Symbol: The

: 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

is a fast-paced thriller by Dan Brown that explores the hidden history of Washington, D.C., and the world of Freemasonry. It is the third novel featuring Harvard symbologist Robert Langdon , following Angels & Demons and The Da Vinci Code . Plot Overview 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