The Lost Symbol (Robert Langdon) is written by Dan Brown. The story is about a man named Robert Langdon, who thinks that he had been invited to give a lecture in the Capitol Building, Washington DC. Later he realised that the invitation is a gruesome invitation into an ancient world of hidden wisdom. When Langdon’s mentor, Peter Solomon – prominent mason and philanthropist – is kidnapped, Langdon realizes that his only hope of saving his friend’s life is to accept this mysterious summons.
It takes him on a breathless chase through Washington’s dark history. All that was familiar is changed into a shadowy, mythical world in which Masonic secrets and never-before-seen revelations seem to be leading him to a single impossible and inconceivable truth. What had happened to Peter Solomon? Was Robert Langdon able to release him from the kidnappers?