The Sigma Protocol

After phenomenal bestseller upon bestseller, Robert Ludlum's books still "dominate the field in adventure-drenched thrillers" (Chicago Tribune). Now Ludlum's books are at an all-time high in this new breakneck classic of international intrigue, terrifying deception, and two random strangers who unwittingly hold the fate of the world in their hands...

In Zurich, Switzerland, American investment banker Ben Hartman has arrived on holiday when he chances upon old friend Jimmy Cavanaugh-- a madman who's armed and programmed to assassinate. In a matter of minutes, six innocent bystanders-- and Cavanaugh-- are dead. But when his body vanishes, and his weapon mysteriously appears in Hartman's luggage, Hartman is plunged into an unfathomable nightmare, and suddenly finds himself on the run. Meanwhile in Washington, D.C., Anna Navarro, field agent for the Department of justice, has been asked to investigate the sudden-- seemingly unrelated-- deaths of eleven men throughout the world. The only thing that connects them is a secret file, over a half-century old, linked to the CIA, and marked with the same puzzling codename: Sigma.

But as Anna follows the connecting thread, she finds herself in the shadows of a relentless killer who is one step ahead of her, victim by victim. Together she and Hartman must uncover the diabolical secrets long held behind the codename, Sigma. It will threaten everything they think they know about themselves and confirm their very worst fears...

Robert Ludlum 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. 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.