The main character in Chris Ryan’s Agent 21 series of books is called Zak Darke a teenager whose parents were killed in a mass murder and it is suspected that it may have been a terrorist attack. The story follows Zak through his life, which is changed forever when he is approached by a Government agent. There are five books in the series starting with Agent 21 which is the beginning of the story and each book follows on from the last one.
When Zak Darke’s parents die in an unexplained mass murder he’s left alone in the world. That is until he’s sought out by a mysterious man: ‘I work for a government agency,’ the man tells him. ‘You don’t need to know which one. Not yet. All you need to know is that we’ve had our(…)