Robert Ludlum's The Hades Factor: A Covert-One Novel

. A baffling virus has claimed the lives of four people across the country--including Dr. Sophia Russell, a research scientist working to understand the disease. Bitter and broken-hearted over the death of his beautiful fiancée, Jon Smith is determined to uncover the cause of the virus that killed her--and prevent it from turning into a pandemic of epic proportions. He'll travel across the globe and into the darkest corridors of murder and greed, to find a killer who would sacrifice millions of lives for his own success ... .