I Am Pilgrim

A former chief of a clandestine US intelligence division known only as Pilgrim has walked away from his covert life to live in anonymity. But when an untraceable murder in a seedy Manhattan hotel matches the investigative methods detailed in Pilgrim's own forensic textbook, he is pulled back into service. Soon, a routine homicide inquiry expands into a high-stakes global manhunt against a brilliant, elusive operative engineering a devastating biological strike against the United States.