When Black Star sends Elena to New York, Danny and Fergus come along to keep an eye on her. But Fergus knows that once this mission is over, the government will have them all eliminated. As Elena begins to fall under Black Star's spell, it will take all of Danny's survival training to find a way out.

Having scored smash bestsellers in Britain with Traitor and Payback, the adventure continues in Avenger with all the authentic Special Ops details that made the previous books stand out.