Ben Hartman is vacationing in Zurich Switzerland when he chances upon his oldfriend Jimmy Cavanaugha madman whos armed and programmed to assassinate. Ina matter... » 

Ben Hartman is vacationing in Zurich Switzerland when he chances upon his oldfriend Jimmy Cavanaugha madman whos armed and programmed to assassinate. Ina matter of minutes six innocent bystanders are dead. So is Cavanaugh. Butwhen his body vanishes and his weapon mysteriously appears in Hartmansluggage Hartman is plunged into an unfathomable nightmare...Meanwhile AnnaNavarro field agent for the Department of Justice has been asked toinvestigate the sudden random deaths of eleven men throughout the world. Theonly thing that connects them? A secret file over a halfcentury old thatslinked to the CIAand is marked with the same puzzling codename Sigma. AsAnna follows the connecting threadand Hartman finds himself on the runsheends up in the shadows of a relentless killer who is one step ahead ofher...victim by victim. Now she and Hartman together must uncover thediabolical secrets long held behind Sigma. It will threaten everything theythink they know about themselvesand confirm their very worst fears... «