Robert Ludlum

The Sigma Protocol is the last novel written completely by Robert Ludlum, and was published posthumously. It is the story of the son of a Holocaust survivor who gets entangled in an international conspiracy by industrialists and financiers to take advantage of wartime technology.

The Bourne Ultimatum is the third Jason Bourne novel written by Robert Ludlum and a sequel to The Bourne Supremacy. First published in 1990, it was the last Bourne novel to be written by Ludlum himself. Eric Van Lustbader wrote a sequel titled The Bourne Legacy fourteen years later. A film titled The Bourne Ultimatum …