When a light bulb falls in a Chicago subway tunnel, it releases a pathogen that could kill millions.  While the mayor postures and poses, people start dying, especially on the city’s grim west side.  Hospitals become morgues, trains become hearses.  Finally, the government acts by sealing off entire sections of the city – but are they keeping people out or in?  The hunt for those behind this plot takes P.I Michael Kelly into the underworld of Chicago and the more frightening world of black biology – an emerging elite discipline where scientists play God and will stop at nothing to preserve their secrets.