The Lost Symbol is the third book in Dan Brown's Robert Langdon series. Langdon is summoned to Washington, D.C., where he becomes embroiled in a dangerous quest for the Masonic Pyramid, a hidden treasure that holds immense power. As Langdon deciphers cryptic symbols and navigates through secret societies, he uncovers shocking revelations that could change the course of history. The Lost Symbol is a thrilling conspiracy mystery that keeps readers guessing until the very end.
