Ben Hartman is vacationing in Zurich, Switzerland when he chances upon his old friend Jimmy Cavanaugh—a madman who’s armed and programmed to assassinate. In a matter of minutes, six innocent bystanders are dead. So is Cavanaugh. But when his body vanishes, and his weapon mysteriously appears in Hartman’s luggage, Hartman is plunged into an unfathomable nightmare…
Meanwhile, Anna Navarro, field agent for the Department of Justice, has been asked to investigate the sudden, random deaths of eleven men throughout the world. The only thing that connects them? A secret file, over a half-century old, that’s linked to the CIA—and is marked with the same puzzling codename: Sigma.
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“Perfectly executed...thunders forward at breakneck pace.”—People
“Vintage Ludlum.”—Houston Chronicle
“Ludlum still dominates the field in adventure-drenched thrillers.”—Chicago Tribune
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.