Flynn Tazer never expected his summer to turn out like this. He had originally planned on moving in with his uncle and aunt in their snug, little flat; once there, he would enjoy a peaceful respite before heading off to university to pursue his dream of becoming a Scotland Yard Detective, just like his Uncle Ian. Instead, he ends up in a four-level house in the heart of London, surrounded by a top-secret organization called the Shadow Agents. As if that isn't crazy enough, his uncle is their leader, and has been for the last two years.

Who are the Shadow Agents? They are a group of men devoted to taking out the villains that not even Mi5 and Mi6 can get their hands on. Their current mission: track down the notorious Mallevilles who have been plaguing the United Kingdom for well over half a decade. All the evidence suggests that the Mallevilles' master plan is about to take place, but the Shadow Agents have yet to discover just what that plan is. Time is ticking, and for the moment, the Mallevilles appear to have the upper hand.

His world turned upside down in a matter of hours, Flynn finds himself thrown into the wild world of spies and intrigue. The fate of the United Kingdom lies in the hands of just a few men. It's a summer he'll never forget!