Angels & Demons was the reclusive author Dan Brown's third novel after he gave up his job as an English teacher. It tells the story of Harvard symbologist Robert Langdon and his brush with a shadowy secret society, the Illuminati, and his frantic quest for the world's most powerful energy source, in the company of a beautiful Italian physicist whose father, a brilliant physicist, has been murdered. Stars Tom Hanks, Ewan McGregor and Ayelet Zurer Directed by Ron Howard