The Broken Window — Jeffery Deaver

Lincoln Rhyme, "among the most brilliant and most vulnerable of crime fiction's heroes" (New York Post), faces the terrifying dark side of the Internet age . . . as a twisted techno-genius destroys lives with impunity by stealing personal information from behind the impenetrable walls of cyberspace. Rhyme's cousin Arthur has been arrested on murder charges, and the evidence against the relative Lincoln hasn't seen in years is perfect--too perfect. Lincoln and his partner, Amelia Sachs, piece together a deadly pattern of similarly vicious frame-ups that leads them to the imposing Strategic Systems Datacorp and a master of identity theft and manipulation known only as "522." But cracking this ingenious killer's realm places Rhyme and Sachs exactly where "522" wants them--in line to be the next victims.