The Nervous System — Nathan Larson

After a series of large-scale terrorist attacks, New York City is reduced to a shadow of its former self. As the city struggles to dig itself out of the wreckage, a nameless, obsessive-compulsive veteran with a spotty memory, a love for literature, and a strong if unique moral code has taken up residence at the Main Branch of the New York Public Library. Dubbed "Dewey Decimal" for his desire to reorganize the library's stock, he gets by as bagman and muscle for unscrupulous politicians and underworld figures -- as detailed in the first book in this series, The Dewey Decimal System.

In The Nervous System, Decimal, attempting to clean up loose ends after the violent events in the first book, stumbles upon information concerning the gruesome murder of a prostitute and a prominent US senator's involvement. Immediately he finds himself chasing ghosts and fighting for his life, pursued by Blackwater-style private military contractors and the ever-present specter of his own past. Decimal confronts a twilight world of Korean hostess bars, childhood bogeymen, and the face of the military-industrial complex gone haywire -- all framed by a city descending toward total chaos.