Robert Langdon returns in Dan Brown''s brilliant new thriller, THE SECRET OF SECRETS, available for pre-order now.The bestselling continuation of global phenomenon THE DA VINCI CODE, featuring symbologist Robert Langdon.The Capitol Building, Washington DC: Harvard symbologist Robert Langdon believes he is here to give a lecture. He is wrong. Within minutes of his arrival, a shocking object is discovered. It 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 is to take 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...