What to read after New York Blues?

Hal Halliday runs a missing persons business in mid 21st century New York. It is a city that is drowning in refugees after terrorist outrages have left much of America a radioactive wasteland. People colour their grim lives with endless hours spent in VR. It is an addiction which has made VR magnate Sergio Mantoni a multi-millionaire. But now Mantoni faces a threat from a guerrilla group called VIREX, who are dedicating to ending the false promise of VR. And when Hal accepts a job to look for the missing sister of a Holodrama star, he find himself drawn into the complex world of VR and VIREX ..