'In Budapest, Will Slater senses a whisper of the past. He follows the trail down neon-drenched alleys, and then it finds him.
'An old ally resurfaces.
'Jason King returns with devastating news.
'When Slater agrees to help get revenge, they quickly find themselves in a fight they know very little about. Because the world is changing. Technology is rapidly advancing, spiralling toward a total transformation of society. There is a new breed of terrorist — the next step in human evolution. As the truth unravels, the terror amplifies. And by the time it's over, they both find out that there is a fate far, far worse than death...
'Some doors should never be opened.' (Publication summary)