Sean Doyle faced danger, death and other things he'd rather forget during his time in the Counter Terrorist Unit. But times change, even if Doyle doesn't. He's older but no wiser and the world he knew has changed. Now he finds himself working as a Private Security Consultant in Baghdad, still a city in turmoil. His job is to protect the men working on a new rail line from terrorist attacks. Doyle is given the chance to re-join the Counter Terrorist Unit. The reason is that a case he worked on thirty years earlier has been re-opened. A man he thought was dead has been spotted in the company of the Russian Mafia. But how can this be? Doyle knows that he himself killed this man one fateful night in Ireland back in the eighties. After physical and psychological tests, he will have to work with a partner. Between them, these two will have to hunt down the man who Doyle thought was dead. The man responsible for the death of the only woman Doyle ever loved. It's meant to be a mission but, for Doyle, it's what he does best. It's revenge.