premise: Dan Brown is the author of a bestselling novel from 2003.
hypothesis: Daniel Gerhard `` Dan '' Brown ( born June 22 , 1964 ) is an American author of thriller fiction who wrote the 2003 bestselling novel The Da Vinci Code . Inferno is a 2013 mystery thriller novel by American author Dan Brown and the fourth book in his Robert Langdon series , following Angels & Demons , The Da Vinci Code and The Lost Symbol . Michael Cordy . Dan Brown published The Da Vinci Code in 2003 , and its success may have influenced the renaming of Cordy 's first three novels .