Harry Tate has one rule: you don´t abandon your friends. When he learns that former colleague Rik Ferris has had a breakdown and disappeared, allegedly in possession of highly sensitive secrets from MI6´s archives, he agrees to look for him and, if possible, bring him back in. But where to begin? Rik could be anywhere in the world.
All Harry knows is, if he doesn´t find Rik, others will be sent out instead. And they won´t play by the same rules.
What Harry doesn´t know is that Rik is being held prisoner and tortured for information relating to a high-level mole in the British establishment. If he doesn´t tell his captors what he knows, it will result in a devastating cyber attack designed to bring the UK to its knees.