Ravens have been stolen from the Tower of London! Mac B.'s top-secret mission? Travel to Iceland and retrieve the ravens... or Britain is ruined!
 
In Iceland, Mac discovers: secret submarines hungry polar bears mysterious blueprints... and his old archnemesis! Is the KGB man behind this birdnapping? Can Mac get the ravens to safety? It's time for an epic, top secret smackdown between these two secret agents! Historical facts are masterfully woven throughout the plot, with full-colour illustrations on every page perfect for kids who love to laugh themselves silly.