I read a hard copy version of the book and excited to see that an audiobook version is available. It took some patience but worth it to enjoy the book..Show More » again from a different (audio) viewpoint.In the un-dated future a worldwide catastrophe (which is not explained in the book) has transformed London (and presumably other places) into a crowded city of refugees. Simon Petrovitch is a Russian refugee with a past. While he just wants to blend into the crowd he surprises himself by acting when he witnesses a kidnapping in progress. That one event triggers a whole sequence of events while he tries to extricate himself from crime lords, an interfering police detective, an angry priest, a nun bodyguard, and the birth of an artificial intelligence (AI) which takes control of the city.