How many literary titles does Dan Brown done?

Answer 1

Dan Brown wrote two books those are not continued as a series: Digital Fortress (1998) and Deception Point(2001).

In Robert Langdon series there are 4 books: Angels and Demons (2000), The Da Vinci Code (2003), The Lost Symbol (2009) and Inferno (2013) and two less known humour books co-written with his wife under the pseudonym Danielle Brown: 187 Men to Avoid: A Survival Guide for the Romantically Frustrated Woman (1995) and The Bald Book (1998).

Altogether (as of December 2013) wrote 8 books.