The Bourne Legacy is a 2004 spy fiction thriller written by Eric Van Lustbader. It is the fourth novel in the Jason Bourne series created by Robert Ludlum and the first to be written by Lustbader. He has also written eight more novels in the series, The Bourne Betrayal, The Bourne Sanction, The Bourne Deception, The Bourne Objective, The Bourne Dominion, The Bourne Imperative, The Bourne Retribution and The Bourne Ascendancy.