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..
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