Claim: Dan Brown wrote his first novel in 2006.
Evidence: Three of them , Angels & Demons -LRB- 2000 -RRB- , The Da Vinci Code -LRB- 2003 -RRB- , and Inferno -LRB- 2013 -RRB- , have been adapted into films.
Angels & Demons is a 2000 bestselling mystery-thriller novel written by American author Dan Brown and published by Pocket Books and then by Corgi Books.
The Da Vinci Code is a 2003 mystery-detective novel by Dan Brown.