The mysterious 522 commits vicious crimes and then plants ironclad evidence to implicate innocent men. This timely thriller reunites Lincoln Rhyme with his partner and paramour Amelia Sachs, as they face their toughest adversary yet.

The Monterey Peninsula is rocked when a killer begins to leave roadside crosses beside local highways. Kathryn Dance, the California Bureau of Investigation's foremost kinesics expert, and Deputy Michael O'Neil follow a lead to Travis Brigham, a troubled teenager whose role in a fatal car accident has inspired vicious attacks against him on a popular blog, The Chilton Report. But as the investigation progresses, Travis vanishes--and Dance is forced...

A woman awakes in the morning to find that someone has picked her apartment's supposedly impregnable door lock and rearranged personal items, even sitting beside her while she slept. The intrusion, the police learn, is a message to the entire city of carnage to come. Lincoln Rhyme and Amelia Sachs are brought in to investigate and soon learn that the sociopathic intruder, who calls himself 'the Locksmith,' can break through any lock or security system...