On a strange assignment from a wealthy industrialist, Cayce Pollard uses her work to distract herself from the recent death of her father, missing since the World Trade Center attacks the previous year. Tracking a piece of film footage on the Internet takes her across the globe, but when her own computer is hacked she begins to realize that perhaps she has a personal connection to the story of which even she is unaware. A New York Times Notable Book for 2003.