Robert Ludlum (1927-2001) was the author of 25 thriller novels, including The Bourne Identity, The Bourne Supremacy and The Bourne Ultimatum--the books on which the international hit movies were based--and The Sigma Protocol. He was also the creator of the Covert-One series. Born in New York City, Ludlum received a B.A. from Wesleyan University, and before becoming an author, he was a United States Marine, a theater actor and producer.

Gayle Lynds is the bestselling, award-winning author of several international espionage thrillers, including Masquerade, The Coil, and The Last Spymaster. A member of the Association for Intelligence Officers, she is cofounder (with David Morrell) of ITW (International Thriller Writers). She lives in Santa Barbara.